i have a two-month old PowerMac G5, dual 2ghz that is crashing several times each day. I've just begun paying closer attention to what I'm doing when it happens, but as far as I can tell (I don't remember the first couple of crashes), it always happens when I'm surfing the Internet, and -- I think, but am not certain -- only when I go to a site I haven't visited before (but not every new site, it's unpredictable). When it happens, my screen darkens slightly and I get an error message telling me that OS X has quit unexpectedly and that I need to shut down my machine using the power button and then restart it. I believe this began happening when I switched to the Firefox 1.5 beta. As a test, I deleted this version and loaded build 1.07, but I soon experienced another crash. Then I tried the 1.01 version of Camino, but within a day or so I had another crash. Then I tried build .84 of Camino, eventual crash again. So far it hasn't happened while using Safari, but that could just be because I haven't used Safari since I got this machine, that is until the last couple days in an effort to see if the problem is tied to Firefox or Camino versus something else, like hardware. I bought the machine direct from Apple with 1 gig of memory, but immediately added 2 gigs that I got from Crucial (before I even booted it the first time). I thought maybe it could be bad memory, but: a) why was I able to go more than a month with no crashes, and b why would a browser be more memory intensive than using Photoshop, Final Cut or Logic, which I do every day, with tons of stuff open, rendering, etc. As best I can tell, I haven't had any crashes except when browsing the internet. I hate Safari, so I'm almost hoping it's not Firefox or Camino, 'cuz I definitely don't want to switch to Safari. Has anyone else experienced this problem? Thanks for any help.