I have seen this as well on an IBM X30 laptop. Screenshot and lspci info attached.

The display corruption seems to affect text only.  I do not have compiz enabled. This is a fresh install of 9.04. My xorg.conf file is zero-length (the default, now?).


**************************************************************
00:00.0 Host bridge [0600]: Intel Corporation 82830 830 Chipset Host Bridge [8086:3575] (rev 04)
	Subsystem: IBM Device [1014:021d]
	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 <unassigned> (32-bit, prefetchable)
	Capabilities: <access denied>
	Kernel driver in use: agpgart-intel
	Kernel modules: intel-agp

00:02.0 VGA compatible controller [0300]: Intel Corporation 82830 CGC [Chipset Graphics Controller] [8086:3577] (rev 04)
	Subsystem: IBM Device [1014:0513]
	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 11
	Region 0: Memory at e0000000 (32-bit, prefetchable) [size=128M]
	Region 1: Memory at d0000000 (32-bit, non-prefetchable) [size=512K]
	Capabilities: <access denied>
	Kernel modules: intelfb

00:02.1 Display controller [0380]: Intel Corporation 82830 CGC [Chipset Graphics Controller] [8086:3577]
	Subsystem: IBM Device [1014:0513]
	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 e8000000 (32-bit, prefetchable) [size=128M]
	Region 1: Memory at d0080000 (32-bit, non-prefetchable) [size=512K]
	Capabilities: <access denied>

00:1d.0 USB Controller [0c03]: Intel Corporation 82801CA/CAM USB Controller #1 [8086:2482] (rev 02)
	Subsystem: IBM Device [1014:0220]
	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 11
	Region 4: I/O ports at 1800 [size=32]
	Kernel driver in use: uhci_hcd

00:1d.1 USB Controller [0c03]: Intel Corporation 82801CA/CAM USB Controller #2 [8086:2484] (rev 02)
	Subsystem: IBM Device [1014:0220]
	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 11
	Region 4: I/O ports at 1820 [size=32]
	Kernel driver in use: uhci_hcd

00:1d.2 USB Controller [0c03]: Intel Corporation 82801CA/CAM USB Controller #3 [8086:2487] (rev 02)
	Subsystem: IBM Device [1014:0220]
	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 11
	Region 4: I/O ports at 1840 [size=32]
	Kernel driver in use: uhci_hcd

00:1e.0 PCI bridge [0604]: Intel Corporation 82801 Mobile PCI Bridge [8086:2448] (rev 42)
	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=07, sec-latency=64
	I/O behind bridge: 00003000-00007fff
	Memory behind bridge: d0200000-dfffffff
	Prefetchable memory behind bridge: f0000000-f80fffff
	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 82801CAM ISA Bridge (LPC) [8086:248c] (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 modules: iTCO_wdt, intel-rng

00:1f.1 IDE interface [0101]: Intel Corporation 82801CAM IDE U100 Controller [8086:248a] (rev 02) (prog-if 8a [Master SecP PriP])
	Subsystem: IBM Device [1014:0220]
	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 11
	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 1860 [size=16]
	Region 5: Memory at 30000000 (32-bit, non-prefetchable) [size=1K]
	Kernel driver in use: ata_piix

00:1f.3 SMBus [0c05]: Intel Corporation 82801CA/CAM SMBus Controller [8086:2483] (rev 02)
	Subsystem: IBM Device [1014:0220]
	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 11
	Region 4: I/O ports at 1880 [size=32]
	Kernel modules: i2c-i801

00:1f.5 Multimedia audio controller [0401]: Intel Corporation 82801CA/CAM AC'97 Audio Controller [8086:2485] (rev 02)
	Subsystem: IBM Device [1014:051c]
	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 11
	Region 0: I/O ports at 1c00 [size=256]
	Region 1: I/O ports at 18c0 [size=64]
	Kernel driver in use: Intel ICH
	Kernel modules: snd-intel8x0

00:1f.6 Modem [0703]: Intel Corporation 82801CA/CAM AC'97 Modem Controller [8086:2486] (rev 02)
	Subsystem: IBM Device [1014:051a]
	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 11
	Region 0: I/O ports at 2400 [size=256]
	Region 1: I/O ports at 2000 [size=128]
	Kernel modules: snd-intel8x0m

01:00.0 CardBus bridge [0607]: Ricoh Co Ltd RL5c476 II [1180:0476] (rev a8)
	Subsystem: IBM Device [1014:0185]
	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: 168
	Interrupt: pin A routed to IRQ 11
	Region 0: Memory at 50000000 (32-bit, non-prefetchable) [size=4K]
	Bus: primary=01, secondary=02, subordinate=05, sec-latency=176
	Memory window 0: f0000000-f3fff000 (prefetchable)
	Memory window 1: d4000000-d7fff000
	I/O window 0: 00003000-000030ff
	I/O window 1: 00003400-000034ff
	BridgeCtl: Parity- SERR- ISA- VGA- MAbort- >Reset- 16bInt+ PostWrite+
	16-bit legacy interface ports at 0001
	Kernel driver in use: yenta_cardbus
	Kernel modules: yenta_socket

01:00.1 CardBus bridge [0607]: Ricoh Co Ltd RL5c476 II [1180:0476] (rev a8)
	Subsystem: IBM Device [1014:0185]
	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: 168
	Interrupt: pin B routed to IRQ 11
	Region 0: Memory at 50100000 (32-bit, non-prefetchable) [size=4K]
	Bus: primary=01, secondary=06, subordinate=06, sec-latency=176
	Memory window 0: f4000000-f7fff000 (prefetchable)
	Memory window 1: d8000000-dbfff000
	I/O window 0: 00003800-000038ff
	I/O window 1: 00003c00-00003cff
	BridgeCtl: Parity- SERR- ISA- VGA- MAbort- >Reset- 16bInt+ PostWrite+
	16-bit legacy interface ports at 0001
	Kernel driver in use: yenta_cardbus
	Kernel modules: yenta_socket

01:00.2 FireWire (IEEE 1394) [0c00]: Ricoh Co Ltd R5C552 IEEE 1394 Controller [1180:0552] (prog-if 10)
	Subsystem: IBM Device [1014:0511]
	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, 1000ns max)
	Interrupt: pin C routed to IRQ 11
	Region 0: Memory at d0201000 (32-bit, non-prefetchable) [size=2K]
	Capabilities: <access denied>
	Kernel driver in use: ohci1394
	Kernel modules: firewire-ohci, ohci1394

01:02.0 Network controller [0280]: Intersil Corporation Prism 2.5 Wavelan chipset [1260:3873] (rev 01)
	Subsystem: Intel Corporation Device [8086:2513]
	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, Cache Line Size: 32 bytes
	Interrupt: pin A routed to IRQ 11
	Region 0: Memory at f8000000 (32-bit, prefetchable) [size=4K]
	Capabilities: <access denied>
	Kernel driver in use: hostap_pci
	Kernel modules: hostap_pci, orinoco_pci

01:08.0 Ethernet controller [0200]: Intel Corporation 82801CAM (ICH3) PRO/100 VE (LOM) Ethernet Controller [8086:1031] (rev 42)
	Subsystem: IBM Device [1014:0209]
	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: 66 (2000ns min, 14000ns max), Cache Line Size: 32 bytes
	Interrupt: pin A routed to IRQ 11
	Region 0: Memory at d0200000 (32-bit, non-prefetchable) [size=4K]
	Region 1: I/O ports at 7000 [size=64]
	Capabilities: <access denied>
	Kernel driver in use: e100
	Kernel modules: e100, eepro100