Computer: iMac 2.4 GHz Intel Core 2 Duo. OS: 10.5.8 & 10.6.2 (2 partitions) Here is my story/problem: My iMac was running fine under 10.5.8. I 'upgraded' to SL and immediately it froze at startup (even in safe mode). So, I backed up my data anddid a clean install of SL. I installed a few hundred fonts that I have used for years, along with Illustrator & Photoshop. Over the next week, I had many computer issues. In particular, the process 'fontworker' started using up 50%-99% CPU usage when doing anything at all (i.e. - checking email). I was advised to remove all extra fonts and only leave the default ones - I did so. Upon restart, it froze during startup. I booted in safe mode, repaired the disk and emptied the font cache. I rebooted into safe mode again, and it froze during startup. I have tried starting from scratch (clean install of SL, adding Adobe apps and only a few dozen necessary fonts) with the same results. Because of this behavior, I have my iMac partitioned as half 10.5.8 (thousands of fonts, runs great), and half 10.6.2 (unusable, freezes during startup, even in safe mode). ------------------------------------ Right now the plan is to try to (yet again) clean install SL once 10.6.3 is out. My questions are the following: (1) I have not seen anything about this on MacRumors, and have not seen any real solutions on other forums ... is there anyone who has had similar problems or, better yet, have a suggestion for a solution for me? (It is tough to sort through hundreds of posts in a general "SL crashes!" thread - point me in the right direction if I have missed something) (2) I'm assuming 10.6.3 won't help (apple didn't seem to make any attempt to fix this issue with the other two updates, so I won't assume the next update will either). Does anyone have an easy to understand method of safely adding fonts to SL without causing it to die? I have always used fontbook, but tried FontExplorer (without success) during one of my clean install of SL. Someone suggested adding 10 fonts at a time, writing them down if they cause problems, then repeat. There are two problems with this: first, the added fonts seem to cause havoc non-immediately (making it hard to know which 10-font batch caused the problems), second, having to keep clean installing SL every time a bad batch of fonts is installed then 'repeating' is not something I have the time & patience for - I have thousands of fonts. Any help/tips/etc would be appreciated. Thanks!!!