I recently upgraded to Mountain Lion AND upgraded from Photoshop CS5 to CS6 , Sweet!
For my work, I need to do some arabic typography, which is a GREAT feature in Photoshop CS6, but as soon as I enabled the Middle Eastern type Engine, PS starts freezing every 5 seconds and becomes VERY sluggish !, worry no more reader, here’s the fix!
Apparently after some research, found that the problem is with the FontCache being broken, so we’re going to fix that now with two terminal commands, first thing close any running instances of photoshop, then fire up your terminal and type those commands in (make sure your type engine is set to middle eastern before doing that from Photoshop->Preferences->Type…):
sudo atsutil databases –remove
sudo rm -r ~/Library/Caches/Adobe/TypeSupport
EDIT: Thanks to iAhmed, he says if it doesn’t work for some people, you might have to also delete all non-system folder from /Library/Fonts by running this command
sud rm -r /Library/Fonts/
After that, start photoshop and voilá, problem magically solved !
If any of the readers has another issue please let me know in the comments and i’ll see if I can help in any way !