Problem with inkscape ruler+insertion creates a rash of black triangles where there should be a line

[Saul]

I love inscape - but I am bothered by this bug - hope this helps - You can see I am more a designer than computer person!

description: Computer
    width: 64 bits
    capabilities: vsyscall64 vsyscall32
  *-core
       description: Motherboard
       physical id: 0
     *-memory:0
          description: System memory
          physical id: 3
          size: 3964MiB
     *-cpu
          product: AMD Athlon(tm) 64 X2 Dual Core Processor 4800+
          vendor: Advanced Micro Devices [AMD]
          physical id: 5
          bus info: cpu@0
          size: 2400MHz
          capacity: 2400MHz
          width: 64 bits
          capabilities: fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt x86-64 3dnowext 3dnow rep_good pni lahf_lm cmp_legacy cpufreq
     *-memory:1 UNCLAIMED
          description: Memory controller
          product: CK804 Memory Controller
          vendor: nVidia Corporation
          physical id: 0
          bus info: pci@0000:00:00.0
          version: a3
          width: 32 bits
          clock: 66MHz (15.2ns)
          capabilities: bus_master cap_list
          configuration: latency=0
     *-isa
          description: ISA bridge
          product: CK804 ISA Bridge
          vendor: nVidia Corporation
          physical id: 1
          bus info: pci@0000:00:01.0
          version: a3
          width: 32 bits
          clock: 66MHz
          capabilities: isa bus_master
          configuration: latency=0
     *-serial
          description: SMBus
          product: CK804 SMBus
          vendor: nVidia Corporation
          physical id: 1.1
          bus info: pci@0000:00:01.1
          version: a2
          width: 32 bits
          clock: 66MHz
          capabilities: cap_list
          configuration: driver=nForce2_smbus latency=0 maxlatency=1 mingnt=3
          resources: irq:3 ioport:e400(size=32) ioport:4c00(size=64) ioport:4c40(size=64)
     *-usb:0
          description: USB Controller
          product: CK804 USB Controller
          vendor: nVidia Corporation
          physical id: 2
          bus info: pci@0000:00:02.0
          version: a2
          width: 32 bits
          clock: 66MHz
          capabilities: ohci bus_master cap_list
          configuration: driver=ohci_hcd latency=0 maxlatency=1 mingnt=3
          resources: irq:20 memory:d4104000-d4104fff
     *-usb:1
          description: USB Controller
          product: CK804 USB Controller
          vendor: nVidia Corporation
          physical id: 2.1
          bus info: pci@0000:00:02.1
          version: a3
          width: 32 bits
          clock: 66MHz
          capabilities: ehci bus_master cap_list
          configuration: driver=ehci_hcd latency=0 maxlatency=1 mingnt=3
          resources: irq:21 memory:d4105000-d41050ff
     *-multimedia
          description: Multimedia audio controller
          product: CK804 AC'97 Audio Controller
          vendor: nVidia Corporation
          physical id: 4
          bus info: pci@0000:00:04.0
          version: a2
          width: 32 bits
          clock: 66MHz
          capabilities: bus_master cap_list
          configuration: driver=Intel ICH latency=0 maxlatency=5 mingnt=2
          resources: irq:22 ioport:dc00(size=256) ioport:e000(size=256) memory:d4103000-d4103fff
     *-ide:0
          description: IDE interface
          product: CK804 IDE
          vendor: nVidia Corporation
          physical id: 6
          bus info: pci@0000:00:06.0
          version: f2
          width: 32 bits
          clock: 66MHz
          capabilities: ide bus_master cap_list
          configuration: driver=pata_amd latency=0 maxlatency=1 mingnt=3
          resources: irq:0 ioport:1f0(size=8) ioport:3f6 ioport:170(size=8) ioport:376 ioport:f000(size=16)
     *-ide:1
          description: IDE interface
          product: CK804 Serial ATA Controller
          vendor: nVidia Corporation
          physical id: 7
          bus info: pci@0000:00:07.0
          version: f3
          width: 32 bits
          clock: 66MHz
          capabilities: ide bus_master cap_list
          configuration: driver=sata_nv latency=0 maxlatency=1 mingnt=3
          resources: irq:23 ioport:9f0(size=8) ioport:bf0(size=4) ioport:970(size=8) ioport:b70(size=4) ioport:d800(size=16) memory:d4102000-d4102fff
     *-ide:2
          description: IDE interface
          product: CK804 Serial ATA Controller
          vendor: nVidia Corporation
          physical id: 8
          bus info: pci@0000:00:08.0
          version: f3
          width: 32 bits
          clock: 66MHz
          capabilities: ide bus_master cap_list
          configuration: driver=sata_nv latency=0 maxlatency=1 mingnt=3
          resources: irq:22 ioport:9e0(size=8) ioport:be0(size=4) ioport:960(size=8) ioport:b60(size=4) ioport:c400(size=16) memory:d4101000-d4101fff
     *-pci:0
          description: PCI bridge
          product: CK804 PCI Bridge
          vendor: nVidia Corporation
          physical id: 9
          bus info: pci@0000:00:09.0
          version: a2
          width: 32 bits
          clock: 66MHz
          capabilities: pci subtractive_decode bus_master
          resources: ioport:a000(size=4096) memory:d4000000-d40fffff
        *-network
             description: Ethernet interface
             product: RTL-8139/8139C/8139C+
             vendor: Realtek Semiconductor Co., Ltd.
             physical id: 6
             bus info: pci@0000:05:06.0
             logical name: eth0
             version: 10
             serial: 00:0e:2e:b8:4b:29
             width: 32 bits
             clock: 33MHz
             capabilities: bus_master cap_list ethernet physical
             configuration: broadcast=yes driver=8139too driverversion=0.9.28 ip=10.0.0.4 latency=32 maxlatency=64 mingnt=32 multicast=yes
             resources: irq:16 ioport:a000(size=256) memory:d4000000-d40000ff
     *-bridge
          description: Ethernet interface
          product: CK804 Ethernet Controller
          vendor: nVidia Corporation
          physical id: a
          bus info: pci@0000:00:0a.0
          logical name: eth1
          version: a3
          serial: 00:17:31:bc:12:39
          width: 32 bits
          clock: 66MHz
          capabilities: bridge bus_master cap_list ethernet physical
          configuration: broadcast=yes driver=forcedeth driverversion=0.64 latency=0 maxlatency=20 mingnt=1 multicast=yes
          resources: irq:23 memory:d4100000-d4100fff ioport:b000(size=8)
     *-pci:1
          description: PCI bridge
          product: CK804 PCIE Bridge
          vendor: nVidia Corporation
          physical id: b
          bus info: pci@0000:00:0b.0
          version: a3
          width: 32 bits
          clock: 33MHz
          capabilities: pci normal_decode bus_master cap_list
          configuration: driver=pcieport
          resources: irq:40
     *-pci:2
          description: PCI bridge
          product: CK804 PCIE Bridge
          vendor: nVidia Corporation
          physical id: c
          bus info: pci@0000:00:0c.0
          version: a3
          width: 32 bits
          clock: 33MHz
          capabilities: pci normal_decode bus_master cap_list
          configuration: driver=pcieport
          resources: irq:41
     *-pci:3
          description: PCI bridge
          product: CK804 PCIE Bridge
          vendor: nVidia Corporation
          physical id: d
          bus info: pci@0000:00:0d.0
          version: a3
          width: 32 bits
          clock: 33MHz
          capabilities: pci normal_decode bus_master cap_list
          configuration: driver=pcieport
          resources: irq:42
     *-pci:4
          description: PCI bridge
          product: CK804 PCIE Bridge
          vendor: nVidia Corporation
          physical id: e
          bus info: pci@0000:00:0e.0
          version: a3
          width: 32 bits
          clock: 33MHz
          capabilities: pci normal_decode bus_master cap_list
          configuration: driver=pcieport
          resources: irq:43 ioport:9000(size=4096) memory:d0000000-d3ffffff ioport:c0000000(size=268435456)
        *-display
             description: VGA compatible controller
             product: G92 [GeForce 9800 GT]
             vendor: nVidia Corporation
             physical id: 0
             bus info: pci@0000:01:00.0
             version: a2
             width: 64 bits
             clock: 33MHz
             capabilities: vga_controller bus_master cap_list rom
             configuration: driver=nvidia latency=0
             resources: irq:18 memory:d2000000-d2ffffff memory:c0000000-cfffffff memory:d0000000-d1ffffff ioport:9000(size=128) memory:d3000000-d301ffff
     *-pci:5
          description: Host bridge
          product: K8 [Athlon64/Opteron] HyperTransport Technology Configuration
          vendor: Advanced Micro Devices [AMD]
          physical id: 100
          bus info: pci@0000:00:18.0
          version: 00
          width: 32 bits
          clock: 33MHz
     *-pci:6
          description: Host bridge
          product: K8 [Athlon64/Opteron] Address Map
          vendor: Advanced Micro Devices [AMD]
          physical id: 101
          bus info: pci@0000:00:18.1
          version: 00
          width: 32 bits
          clock: 33MHz
     *-pci:7
          description: Host bridge
          product: K8 [Athlon64/Opteron] DRAM Controller
          vendor: Advanced Micro Devices [AMD]
          physical id: 102
          bus info: pci@0000:00:18.2
          version: 00
          width: 32 bits
          clock: 33MHz
     *-pci:8
          description: Host bridge
          product: K8 [Athlon64/Opteron] Miscellaneous Control
          vendor: Advanced Micro Devices [AMD]
          physical id: 103
          bus info: pci@0000:00:18.3
          version: 00
          width: 32 bits
          clock: 33MHz
          configuration: driver=k8temp
          resources: irq:0

[Saul (creative-balm)]

Edit: Inkscape