Coj, My first inclination would be to test the memory modules using the Apple Hardware Test disc, or with a utility like rember. Once you've identified known good modules, try them in the others. HTH. Rick On Jul 18, 2006, at 2:20 AM, Brett Conlon wrote: > > Hiya, > > I've just rolled out 3 Quad G5's (10.4.7) and 2 of them have > displayed a very strange kernel panic-like lockup. > > One user was working in Photoshop and in the top left of the screen > (over the top of her Photoshop image & menus) machine code appeared > for about 20 lines stating: > > System failure <blah blah numbers > (Corrupt skip list) > <blah blah> > <and so forth> > Exception state (<numbers>) > <blah> > Backtrace: > <blah numbers> > backtrace terminated - frame not mapped or invalid: <numbers> > <and so on to the bottom> > Waiting for remote debugger connection. > > The other designer who had this same lockup had in her top line > (Debugging Trap) > > > Any thoughts/recommendations? > > Cheers, > > Coj