You most likely have a marginal memory simm. Back down to minimal memory and try again. Get your hands on the Apple Hardware Diag CD and run the memory tests. BTW, I'd recommend the 'Archive and Install' method of upgrading. It leaves you with your original homedir and system settings, but a much cleaner OS install. -- jcw Gary Archer wrote: > I ran into problems with my wife's cube. I used carbon copy cloner to take > a full backup first and I'm glad I did. After the upgrade in place I got > multiple application core dumps (exception error). This would happen in > Entourage, Safari and Word. I moved back the partition and then used the > archive & reinstall. That worked fine for me, YMMV. > > Ann wrote: > > I am planning a "dirty" install, just overlay it over Jaguar. My > girlfriend did both her 12" Powerbook and her Sonnet accelerated Cube > last weekend and she hasn't reported any problems. > > Anything I should be aware of before installing it on the cube? > > > > > -- J.C. Webber III Technical Lead, Unix System Administrator jcw at kingoblio.com (home) www.kingoblio.com Please, if you use Windows, do not add my address to your Address Book. I do not wish to be spammed or have my email address hijacked by a virus and used for fraudulent purposes. Thank you.