CS5 has begun lagging when it did not before!

[nhills]

Okay, for a year now, Photoshop has run on my machine beautifully. But a few days ago, it has begun to lag. This only happens with one user. The other user account runs the program just fine.

I'm stumped as to what the problem may be. I fiddled around with the performance preferences, but no change.

Any ideas?

[Paul]

Steve!!! he will be along in a minute mate.