Mouse skipping problem when external display connnected

I recently purchased a Macbook, and I connect it to a Dell 3008 display using the mini DisplayPort to dual-link DVI adaptor. My issue is that when the Dell is connected and in use, the mouse pointer skips across the screen when I move it, like something is interrupting the input for a very brief period, and it's being interpolated wrongly when the input comes back.
The problem doesn't occur when the external display is disconnected, and it happens with wired USB, wireless USB and wireless Bluetooth mice.
No adjustment of mouse sensitivity options seems to fix it, and the interruption in the pointer movement seems to happen at semi regular intervals of between 5 and 10 seconds apart, although I can't be 100% sure.
Interestingly, it doesn't happen when I connect a lower resolution external display using the same adaptor. So it only happens at 2560x1600. I'm wondering if it's a problem with a hardware accelerated mouse cursor and the NVIDIA graphics driver.
Anyway, it's a real barrier to me using the Macbook, so hopefully someone has a solution.
Thanks!

Same problem here: wireless MS Laser Mouse 6000, either a samsung or LG external display connected via mini adaptor. Have the MS intellipoint drivers installed. It began to happen about a fortnight ago, and seemed to coincide with the Java update 4/Bluetooth Firmware/ Safari update applied on 24/6. This may have been around the time I changed display preference to 'best performance', so could well be a graphics driver issue?
In my case, it tends to happen in certain spots on the screen, and the likelihood of a skip seems to depends on the speed I'm moving the pointer. Faster = more likely.
It's messing up my tanking in warcraft something terrible.

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    com.apple.iokit.IOAudioFamily 1.7.6fc2
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    com.apple.driver.DiskImages 283
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    com.apple.driver.AppleACPIPlatform 1.3.2
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    Interval Since Last Panic Report: 318880 sec
    Panics Since Last Report: 1
    Anonymous UUID: C6A1C75B-0106-4A76-B7DC-E605EEDED792
    Sun May 23 17:41:49 2010
    panic(cpu 0 caller 0x9cedc6): NVRM[0/2:0:0]: Read Error 0x00000100: CFG 0xffffffff 0xffffffff 0xffffffff, BAR0 0xd4000000 0x5a34c000 0x096380c1, D0, P3/4
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    0x52cc9e38 : 0x9cedc6 (0xbd632c 0xc43d20 0xbe3b64 0x0)
    0x52cc9ed8 : 0xade958 (0x9390804 0x85ac004 0x100 0x1058)
    0x52cc9f28 : 0xad6630 (0x85ac004 0x100 0x2af95b 0x38)
    0x52cc9f58 : 0x161ad7f (0x85ac004 0x100 0x4bcd2cee 0x0)
    0x52cca098 : 0xafc27f (0x85ac004 0x9d68004 0x0 0x0)
    0x52cca0d8 : 0x9d7e70 (0x85ac004 0x9d68004 0x0 0x0)
    0x52cca118 : 0x9d41b3 (0x0 0x9 0x0 0x0)
    0x52cca278 : 0x9d6354 (0x0 0x600d600d 0x7027 0x52cca2a8)
    0x52cca348 : 0xc6da74 (0xc1d00050 0xbeef0003 0xa413800 0x71)
    0x52cca3e8 : 0xc6dee9 (0x4433d000 0xa413800 0xace0804 0x0)
    0x52cca428 : 0xc6650a (0x4433d000 0xace0800 0x52cca458 0x2a764f)
    0x52cca458 : 0xc94047 (0x9313940 0xace0800 0x442d5000 0x443d0000)
    0x52cca4c8 : 0xc87f3f (0x9313940 0xad3c000 0x0 0x1)
    0x52cca528 : 0xc88169 (0x442d5000 0x442d5768 0xad3c000 0x0)
    0x52cca578 : 0xc8854a (0x442d5000 0x442d5768 0x52cca87c 0x52cca81c)
    0x52cca898 : 0xc85963 (0x442d5000 0x442d5768 0x1 0x0)
    0x52cca8b8 : 0xc502fb (0x442d5000 0x442d5768 0x52cca8e8 0x2a764f)
    0x52cca8e8 : 0xc870ce (0x442d5000 0x52ccaa1c 0x52cca928 0x442d50c8)
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    0x52ccab08 : 0xc50985 (0x442d5000 0x0 0x52ccab6c 0x52ccab68)
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    0x52ccbf18 : 0x293a8e (0x52ccbf44 0x0 0x0 0x0)
    0x52ccbfc8 : 0x29f018 (0x9c03cc0 0x0 0x10 0xa5632e0)
    Kernel Extensions in backtrace (with dependencies):
    com.apple.GeForce(6.1.0)@0xc45000->0xcedfff
    dependency: com.apple.NVDAResman(6.1.0)@0x96c000
    dependency: com.apple.iokit.IONDRVSupport(2.1)@0x95f000
    dependency: com.apple.iokit.IOPCIFamily(2.6)@0x92d000
    dependency: com.apple.iokit.IOGraphicsFamily(2.1)@0x93e000
    com.apple.nvidia.nv50hal(6.1.0)@0x14ee000->0x190bfff
    dependency: com.apple.NVDAResman(6.1.0)@0x96c000
    com.apple.NVDAResman(6.1.0)@0x96c000->0xc44fff
    dependency: com.apple.iokit.IOPCIFamily(2.6)@0x92d000
    dependency: com.apple.iokit.IONDRVSupport(2.1)@0x95f000
    dependency: com.apple.iokit.IOGraphicsFamily(2.1)@0x93e000
    BSD process name corresponding to current thread: World of Warcraf
    Mac OS version:
    10D573
    Kernel version:
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    System model name: MacBookPro5,1 (Mac-F42D86C8)
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    unloaded kexts:
    com.apple.driver.AppleFileSystemDriver 2.0 (addr 0x104b000, size 0x12288) - last unloaded 164392298908
    loaded kexts:
    org.virtualbox.kext.VBoxNetAdp 3.0.6 - last loaded 37147030078
    org.virtualbox.kext.VBoxNetFlt 3.0.6
    org.virtualbox.kext.VBoxUSB 3.0.6
    org.virtualbox.kext.VBoxDrv 3.0.6
    com.cisco.nke.ipsec 2.0.1
    com.parallels.kext.prl_vnic 5.0 9344.558821
    com.parallels.kext.prl_netbridge 5.0 9344.558821
    com.vmware.kext.vmnet 2.0.5
    com.parallels.kext.prlusbconnect 5.0 9344.558821
    com.vmware.kext.vmioplug 2.0.5
    com.vmware.kext.vmci 2.0.5
    com.parallels.kext.prlhidhook 5.0 9344.558821
    com.vmware.kext.vmx86 2.0.5
    com.parallels.kext.prl_hypervisor 5.0 9344.558821
    com.quark.driver.TetherBerry 1.0.0d6
    com.apple.driver.AppleHWSensor 1.9.3d0
    com.apple.driver.AGPM 100.10.21
    com.apple.filesystems.autofs 2.1.0
    com.apple.driver.AppleMikeyHIDDriver 1.2.0
    com.apple.driver.AppleMikeyDriver 1.8.4fc3
    com.apple.driver.AppleHDA 1.8.4fc3
    com.apple.driver.AudioAUUC 1.4
    com.apple.kext.AppleSMCLMU 1.5.0d1
    com.apple.DontSteal_Mac_OSX 7.0.0
    com.apple.iokit.CHUDUtils 201
    com.apple.driver.ACPISMCPlatformPlugin 4.1.1d0
    com.apple.iokit.CHUDProf 216
    com.apple.driver.AudioIPCDriver 1.1.2
    com.apple.driver.SMCMotionSensor 3.0.0d4
    com.apple.driver.AppleIntelPenrynProfile 17.1
    com.apple.driver.AppleUpstreamUserClient 3.3.2
    com.apple.driver.AppleGraphicsControl 2.8.56
    com.apple.driver.AppleLPC 1.4.11
    com.apple.GeForce 6.1.0
    com.apple.driver.AppleUSBTCButtons 1.8.1b1
    com.apple.driver.AppleUSBTCKeyboard 1.8.1b1
    com.apple.driver.AppleIRController 303
    com.apple.driver.MaxTranserSizeOverrideDriver 2.5.3
    com.apple.iokit.SCSITaskUserClient 2.6.2
    com.apple.driver.AirPortBrcm43xx 422.91.27
    com.apple.iokit.IOAHCIBlockStorage 1.6.1
    com.apple.driver.AppleUSBHub 3.9.6
    com.apple.driver.AppleFWOHCI 4.5.7
    com.apple.nvenet 1.0.73
    com.apple.driver.AppleUSBEHCI 3.9.6
    com.apple.driver.AppleSmartBatteryManager 160.0.0
    com.apple.BootCache 31
    com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1
    com.apple.driver.AppleAHCIPort 2.1.1
    com.apple.driver.AppleUSBOHCI 3.9.6
    com.apple.driver.AppleEFINVRAM 1.3.0
    com.apple.driver.AppleRTC 1.3.1
    com.apple.driver.AppleHPET 1.5
    com.apple.driver.AppleACPIButtons 1.3.2
    com.apple.driver.AppleSMBIOS 1.5
    com.apple.driver.AppleACPIEC 1.3.2
    com.apple.driver.AppleAPIC 1.4
    com.apple.driver.AppleIntelCPUPowerManagementClient 104.3.0
    com.apple.security.sandbox 0
    com.apple.security.quarantine 0
    com.apple.nke.applicationfirewall 2.1.11
    com.apple.driver.AppleIntelCPUPowerManagement 104.3.0
    com.apple.driver.DspFuncLib 1.8.4fc3
    com.apple.driver.AppleProfileReadCounterAction 17
    com.apple.driver.AppleProfileTimestampAction 10
    com.apple.driver.AppleProfileThreadInfoAction 14
    com.apple.driver.AppleProfileRegisterStateAction 10
    com.apple.driver.AppleProfileKEventAction 10
    com.apple.driver.AppleProfileCallstackAction 20
    com.apple.driver.AppleSMBusController 1.0.8d0
    com.apple.iokit.IOSurface 74.0
    com.apple.iokit.IOBluetoothSerialManager 2.3.1f4
    com.apple.iokit.IOSerialFamily 10.0.3
    com.apple.driver.IOPlatformPluginFamily 4.1.1d0
    com.apple.iokit.CHUDKernLib 208
    com.apple.iokit.IOFireWireIP 2.0.3
    com.apple.driver.AppleUSBAudio 2.6.8fc1
    com.apple.iokit.IOAudioFamily 1.7.6fc2
    com.apple.kext.OSvKernDSPLib 1.3
    com.apple.driver.AppleSMC 3.0.1d2
    com.apple.iokit.AppleProfileFamily 41
    com.apple.driver.AppleHDAController 1.8.4fc3
    com.apple.iokit.IOHDAFamily 1.8.4fc3
    com.apple.driver.AppleSMBusPCI 1.0.8d0
    com.apple.nvidia.nv50hal 6.1.0
    com.apple.NVDAResman 6.1.0
    com.apple.iokit.IONDRVSupport 2.1
    com.apple.iokit.IOGraphicsFamily 2.1
    com.apple.driver.BroadcomUSBBluetoothHCIController 2.3.1f4
    com.apple.driver.AppleUSBBluetoothHCIController 2.3.1f4
    com.apple.iokit.IOBluetoothFamily 2.3.1f4
    com.apple.driver.AppleUSBMultitouch 204.12.1
    com.apple.iokit.IOUSBHIDDriver 3.9.6
    com.apple.iokit.IOSCSIBlockCommandsDevice 2.6.2
    com.apple.iokit.IOUSBMassStorageClass 2.6.1
    com.apple.driver.AppleUSBMergeNub 3.9.6
    com.apple.driver.AppleUSBComposite 3.9.0
    com.apple.iokit.IOSCSIMultimediaCommandsDevice 2.6.2
    com.apple.iokit.IOBDStorageFamily 1.6
    com.apple.iokit.IODVDStorageFamily 1.6
    com.apple.iokit.IOCDStorageFamily 1.6
    com.apple.driver.XsanFilter 402.1
    com.apple.iokit.IOAHCISerialATAPI 1.2.3
    com.apple.iokit.IOSCSIArchitectureModelFamily 2.6.2
    com.apple.iokit.IO80211Family 310.6
    com.apple.iokit.IOFireWireFamily 4.2.6
    com.apple.iokit.IOUSBUserClient 3.9.6
    com.apple.iokit.IONetworkingFamily 1.9
    com.apple.iokit.IOAHCIFamily 2.0.3
    com.apple.iokit.IOUSBFamily 3.9.6
    com.apple.driver.NVSMU 2.2.1
    com.apple.driver.AppleEFIRuntime 1.3.0
    com.apple.iokit.IOHIDFamily 1.6.2
    com.apple.iokit.IOSMBusFamily 1.1
    com.apple.kext.AppleMatch 1.0.0d1
    com.apple.security.TMSafetyNet 6
    com.apple.driver.DiskImages 283
    com.apple.iokit.IOStorageFamily 1.6
    com.apple.driver.AppleACPIPlatform 1.3.2
    com.apple.iokit.IOPCIFamily 2.6
    com.apple.iokit.IOACPIFamily 1.3.0
    Model: MacBookPro5,1, BootROM MBP51.007E.B05, 2 processors, Intel Core 2 Duo, 2.8 GHz, 4 GB, SMC 1.33f8
    Graphics: NVIDIA GeForce 9600M GT, NVIDIA GeForce 9600M GT, PCIe, 512 MB
    Graphics: NVIDIA GeForce 9400M, NVIDIA GeForce 9400M, PCI, 256 MB
    Memory Module: global_name
    AirPort: spairportwireless_card_type_airportextreme (0x14E4, 0x8D), Broadcom BCM43xx 1.0 (5.10.91.27)
    Bluetooth: Version 2.3.1f4, 2 service, 2 devices, 1 incoming serial ports
    Network Service: Ethernet, Ethernet, en0
    Network Service: AirPort, AirPort, en1
    Serial ATA Device: Hitachi HTS543232L9SA02, 298.09 GB
    Serial ATA Device: MATSHITADVD-R UJ-868
    USB Device: Built-in iSight, 0x05ac (Apple Inc.), 0x8507, 0x24400000
    USB Device: USB Storage, 0x05e3 (Genesys Logic, Inc.), 0x0715, 0x26300000
    USB Device: USB2.0 Hub, 0x05e3 (Genesys Logic, Inc.), 0x0608, 0x26200000
    USB Device: USB2.0 Hub, 0x05e3 (Genesys Logic, Inc.), 0x0608, 0x26240000
    USB Device: Saitek Eclipse Keyboard, 0x06a3 (Saitek PLC), 0x8020, 0x26243000
    USB Device: USB-PS/2 Optical Mouse, 0x046d (Logitech Inc.), 0xc051, 0x26230000
    USB Device: Logitech USB Speaker, 0x046d (Logitech Inc.), 0x0a04, 0x26220000
    USB Device: BRCM2046 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0x06100000
    USB Device: Bluetooth USB Host Controller, 0x05ac (Apple Inc.), 0x8213, 0x06110000
    USB Device: Apple Internal Keyboard / Trackpad, 0x05ac (Apple Inc.), 0x0236, 0x04600000
    USB Device: IR Receiver, 0x05ac (Apple Inc.), 0x8242, 0x04500000

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