For what it's worth, and it doesn't help Magnus one bit, I use or admin six G4 desktops (450 through dual 1.25 GHz), two Cubes (one with the PL 1 GHz upgrade), two PowerBooks (G3, G4), several G4 iMacs, and an iBook (between work and home), all running 10.2.4. With the exception of one iMac that appears to be morbidly sensitive to anything put its user-serviceable DIMM slot, none of these has ever hung or crashed since upgrading to Jaguar (or at all, if they came with it installed). We use some of these machines quite hard, so I doubt it's lack of exercise. What has happened, and perhaps this is what Magnus refers to as "software crashes," is applications mysteriously quitting. This appears to happen in Microsoft Office v.X applications more often than others, but it occasionally happens in Sherlock and Safari (which is only a beta, after all). I guess this is annoying, but it's relatively rare, except for Office, where I see it about once a day. I suppose I could blame ratty Microsoft products, but they didn't do it before 10.2, so I'll ascribe it to their age (c. 10.1, with only minor patches since) instead. I do believe Jaguar has a problem handling some error conditions in some applications. Hope this is fixed in 10.2.5. Joe Gurman -- "I love deadlines. I love the whooshing sound they make as they go by." - Douglas Adams, 1952 - 2001 Joseph B. Gurman, NASA Goddard Space Flight Center, Solar Physics Branch, Greenbelt MD 20771 USA