Are you noticing any messages in console.log or system.log similar or identical to this? I noticed in that support thread that you posted someone noted getting these...
Jun 24 19:39:09 ******** kernel[0]: NVChannel(GL): Graphics channel exception! status = 0xffff info32 = 0xd = GR: SW Notify Error
Jun 24 19:39:09 ******** kernel[0]: 0000000c
Jun 24 19:39:09 ******** kernel[0]: 00200000 00005097 0000047c 00000000
Jun 24 19:39:09 ******** kernel[0]: 00000486 00000f10 00000000 00000003
Jun 24 19:39:09 ******** kernel[0]: 00000000 00000000 00000002
If so, its likely an issue with the 8600M GT driver's support of anti-aliasing. See if you can disable anti-aliasing in Second Life. At least, that's what I've tracked it down to. This is already filed in Radar and supposedly they have someone working on it, we'll see...
If not, then back to the drawing board!
Hi there...
here's my most recent log (as an attachment)... I do see something quite similar to the one Sbrocket pointed out... now I'm scared... as of the anti-aliasing... I am not quite sure how I would go about disabling it...
Thanks for your continuing support... it means a lot...