This has got the be the largest business product screw up EVER. I installed this piece of crap, and Apple Mail stopped sending, Thunderbird would not work either but Entourage and Eudora worked. I don't use those. I tried ALL the fixes, workarounds and tips. The Speed download 5.2.2 stopped working, so I deleted it and all it's files, still the Safari and Firefox browser downloads did not work, would not even try to work. The new Quicktime icon in the dock was OK, and the effects from holding down on a dock icon was OK. But it's clear that 10.6 is still in stage 1 beta. It's not even close to being ready for the public. Does Apple test their software before sending it out into the wild, or do they use the public as lab rats. I've been a Mac user from day one, and never even tried a PC, but I'm starting to look into it. Apple has been putting out crap for awhile now. I always trusted them in the past, but now I do a SuperDuper smart clone once a month at least, and always before any software updates or upgrades. I was ready this time and went right back to Leopard 10.5.8, and this is where I'm staying. I MIGHT give snow leopard a try again after it reaches 10.6.9, and ALL the developers get there products to work with it. If you want to try this turd, make sure you have a fresh external or separate HD bootable complete clone just before installing, seriously. I know a hand full of people will "claim" they have no problem with it, but the majority 99% do.