tehnick Posted September 10, 2009 Share Posted September 10, 2009 Hi, my mouse cursor seems to be jumping around a lot. It will spontaneously move in a random direction while I'm doing something every few seconds. I've tried unplugging it from my Apple Keyboard and into the back of my PC thinking it might be due to slower speed of USB. This issue is unchanged after the update to 10.6.1. Gigabyte EX58-UD3R (Core i7) 6GB DDR3 1600MHz Logitech G9 Laser Link to comment Share on other sites More sharing options...
iamhappy Posted September 12, 2009 Share Posted September 12, 2009 Some Nvidia users experienced this in leopard while Quicktime or Itunes was opened. we had to use a disabler for AppleUpstreamClient.kext or delete it. just a guess Link to comment Share on other sites More sharing options...
cyberface Posted September 13, 2009 Share Posted September 13, 2009 This problem also appears when speedstep does't work properly, so you should install NullCPUPowerManagement or modify you dsdt to get speedstep. Link to comment Share on other sites More sharing options...
vald Posted September 13, 2009 Share Posted September 13, 2009 try and delete AppleUpstreamUserClient.kext from /System/Library/Extensions folder. reboot. Link to comment Share on other sites More sharing options...
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