Icewm complains failure to close files upon startup, had several unexplained crashes (4 minimal recovery problems, 2 fatal requiring reinstallation), not repeatable. Not even sure if it's related:

The same bug, or one very similar, was reported at Debian, report #578765 in or around 2010 - 2011

My machines details.

tail .xsession-errors:

icewm-session: Warning: Closing file descriptor: 9
icewm-session: Warning: File still open: fd=3, target='/var/log/xrdp-sesman.log' (missing FD_CLOEXEC?)
icewm-session: Warning: Closing file descriptor: 3
icewm-session: Warning: File still open: fd=4, target='socket:[9799]' (missing FD_CLOEXEC?)
icewm-session: Warning: Closing file descriptor: 4
icewm-session: Warning: File still open: fd=5, target='socket:[9801]' (missing FD_CLOEXEC?)
icewm-session: Warning: Closing file descriptor: 5
icewm-session: Warning: File still open: fd=6, target='socket:[9804]' (missing FD_CLOEXEC?)
icewm-session: Warning: Closing file descriptor: 6
icewm-session: Warning: File still open: fd=7, target='socket:[10577]' (missing FD_CLOEXEC?)
icewm-session: Warning: Closing file descriptor: 7
icewm-session: Warning: File still open: fd=9, target='/dev/urandom' (missing FD_CLOEXEC?)
icewm-session: Warning: Closing file descriptor: 9
icewmtray: using /home/klp/.icewm for private configuration files
IceWM: using /home/klp/.icewm for private configuration files
icewmbg: using /home/klp/.icewm for private configuration files
icewmbg: using /home/klp/.icewm for private configuration files

System details:
Description:	Ubuntu 12.10
Release:	12.10
icewm 1.3.7-4

version.log:
Ubuntu 3.5.0-21.32-generic 3.5.7.1

lspci-vnvn.log:
00:00.0 Host bridge [0600]: Intel Corporation 82865G/PE/P DRAM Controller/Host-Hub Interface [8086:2570] (rev 02)
	Subsystem: Dell Device [1028:0151]
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ >SERR- <PERR- INTx-
	Latency: 0
	Region 0: Memory at e0000000 (32-bit, prefetchable) [size=256M]
	Capabilities: [e4] Vendor Specific Information: Len=06 <?>
	Kernel driver in use: agpgart-intel

00:02.0 VGA compatible controller [0300]: Intel Corporation 82865G Integrated Graphics Controller [8086:2572] (rev 02) (prog-if 00 [VGA controller])
	Subsystem: Dell Device [1028:0151]
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin A routed to IRQ 16
	Region 0: Memory at f0000000 (32-bit, prefetchable) [size=128M]
	Region 1: Memory at feb80000 (32-bit, non-prefetchable) [size=512K]
	Region 2: I/O ports at ed98 [size=8]
	Expansion ROM at <unassigned> [disabled]
	Capabilities: [d0] Power Management version 1
		Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
		Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
	Kernel driver in use: i915
	Kernel modules: intelfb, i915

00:06.0 System peripheral [0880]: Intel Corporation 82865G/PE/P Processor to I/O Memory Interface [8086:2576] (rev 02)
	Control: I/O- Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Region 0: Memory at fecf0000 (32-bit, non-prefetchable) [size=4K]

00:1d.0 USB controller [0c03]: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #1 [8086:24d2] (rev 02) (prog-if 00 [UHCI])
	Subsystem: Dell Device [1028:0151]
	Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin A routed to IRQ 16
	Region 4: I/O ports at ff80 [size=32]
	Kernel driver in use: uhci_hcd

00:1d.1 USB controller [0c03]: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #2 [8086:24d4] (rev 02) (prog-if 00 [UHCI])
	Subsystem: Dell Device [1028:0151]
	Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin B routed to IRQ 19
	Region 4: I/O ports at ff60 [size=32]
	Kernel driver in use: uhci_hcd

00:1d.2 USB controller [0c03]: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #3 [8086:24d7] (rev 02) (prog-if 00 [UHCI])
	Subsystem: Dell Device [1028:0151]
	Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin C routed to IRQ 18
	Region 4: I/O ports at ff40 [size=32]
	Kernel driver in use: uhci_hcd

00:1d.3 USB controller [0c03]: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #4 [8086:24de] (rev 02) (prog-if 00 [UHCI])
	Subsystem: Dell Device [1028:0151]
	Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin A routed to IRQ 16
	Region 4: I/O ports at ff20 [size=32]
	Kernel driver in use: uhci_hcd

00:1d.7 USB controller [0c03]: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB2 EHCI Controller [8086:24dd] (rev 02) (prog-if 20 [EHCI])
	Subsystem: Dell Device [1028:0151]
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin D routed to IRQ 23
	Region 0: Memory at ffa80800 (32-bit, non-prefetchable) [size=1K]
	Capabilities: [50] Power Management version 2
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=375mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
		Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
	Capabilities: [58] Debug port: BAR=1 offset=00a0
	Kernel driver in use: ehci_hcd

00:1e.0 PCI bridge [0604]: Intel Corporation 82801 PCI Bridge [8086:244e] (rev c2) (prog-if 00 [Normal decode])
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
	Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Bus: primary=00, secondary=01, subordinate=01, sec-latency=32
	I/O behind bridge: 0000d000-0000dfff
	Memory behind bridge: fea00000-feafffff
	Secondary status: 66MHz- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- <SERR- <PERR-
	BridgeCtl: Parity- SERR+ NoISA- VGA- MAbort- >Reset- FastB2B-
		PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
	Kernel modules: shpchp

00:1f.0 ISA bridge [0601]: Intel Corporation 82801EB/ER (ICH5/ICH5R) LPC Interface Bridge [8086:24d0] (rev 02)
	Control: I/O+ Mem+ BusMaster+ SpecCycle+ MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
	Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Kernel driver in use: lpc_ich
	Kernel modules: lpc_ich, intel-rng

00:1f.1 IDE interface [0101]: Intel Corporation 82801EB/ER (ICH5/ICH5R) IDE Controller [8086:24db] (rev 02) (prog-if 8a [Master SecP PriP])
	Subsystem: Dell Device [1028:0151]
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx+
	Latency: 0
	Interrupt: pin A routed to IRQ 18
	Region 0: I/O ports at 01f0 [size=8]
	Region 1: I/O ports at 03f4 [size=1]
	Region 2: I/O ports at 0170 [size=8]
	Region 3: I/O ports at 0374 [size=1]
	Region 4: I/O ports at ffa0 [size=16]
	Region 5: Memory at feb7fc00 (32-bit, non-prefetchable) [size=1K]
	Kernel driver in use: ata_piix

00:1f.2 IDE interface [0101]: Intel Corporation 82801EB (ICH5) SATA Controller [8086:24d1] (rev 02) (prog-if 8f [Master SecP SecO PriP PriO])
	Subsystem: Dell Device [1028:0151]
	Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap- 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin A routed to IRQ 18
	Region 0: I/O ports at fe00 [size=8]
	Region 1: I/O ports at fe10 [size=4]
	Region 2: I/O ports at fe20 [size=8]
	Region 3: I/O ports at fe30 [size=4]
	Region 4: I/O ports at fea0 [size=16]
	Kernel driver in use: ata_piix

00:1f.3 SMBus [0c05]: Intel Corporation 82801EB/ER (ICH5/ICH5R) SMBus Controller [8086:24d3] (rev 02)
	Subsystem: Dell Device [1028:0151]
	Control: I/O+ Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Interrupt: pin B routed to IRQ 3
	Region 4: I/O ports at eda0 [size=32]
	Kernel modules: i2c-i801

00:1f.5 Multimedia audio controller [0401]: Intel Corporation 82801EB/ER (ICH5/ICH5R) AC'97 Audio Controller [8086:24d5] (rev 02)
	Subsystem: Dell Device [1028:0151]
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin B routed to IRQ 17
	Region 0: I/O ports at ee00 [size=256]
	Region 1: I/O ports at edc0 [size=64]
	Region 2: Memory at feb7fa00 (32-bit, non-prefetchable) [size=512]
	Region 3: Memory at feb7f900 (32-bit, non-prefetchable) [size=256]
	Capabilities: [50] Power Management version 2
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=375mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
		Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
	Kernel driver in use: snd_intel8x0
	Kernel modules: snd-intel8x0

01:08.0 Multimedia audio controller [0401]: Creative Labs CA0106 Soundblaster [1102:0007]
	Subsystem: Creative Labs SB0570 [SB Audigy SE] [1102:100a]
	Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 64 (500ns min, 5000ns max)
	Interrupt: pin A routed to IRQ 17
	Region 0: I/O ports at df20 [size=32]
	Capabilities: [dc] Power Management version 2
		Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
		Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
	Kernel driver in use: snd_ca0106
	Kernel modules: snd-ca0106

01:0c.0 Ethernet controller [0200]: Intel Corporation 82540EM Gigabit Ethernet Controller [8086:100e] (rev 02)
	Subsystem: Dell Optiplex GX270 [1028:0151]
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
	Status: Cap+ 66MHz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 64 (63750ns min), Cache Line Size: 64 bytes
	Interrupt: pin A routed to IRQ 18
	Region 0: Memory at feae0000 (32-bit, non-prefetchable) [size=128K]
	Region 2: I/O ports at df40 [size=64]
	Capabilities: [dc] Power Management version 2
		Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
		Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=1 PME-
	Capabilities: [e4] PCI-X non-bridge device
		Command: DPERE- ERO+ RBC=512 OST=1
		Status: Dev=00:00.0 64bit- 133MHz- SCD- USC- DC=simple DMMRBC=2048 DMOST=1 DMCRS=16 RSCEM- 266MHz- 533MHz-
	Capabilities: [f0] MSI: Enable- Count=1/1 Maskable- 64bit+
		Address: 0000000000000000  Data: 0000
	Kernel driver in use: e1000
	Kernel modules: e1000