I just saw this little software program which apparently speeds up the start up time of photoshop by disabling filters that you never use. If you end up wanting to use a disabled filter while inside photoshop, it will load right then, instead of at start up.
i can't say I have tried it, but it looks interesting. Has anyone else tried it?
Photoshop Speedupand for interests sake, here is an olderthread on
how to speed up photoshop, in general