Cannot access Applications folder
It all started when Preview couldn't open .jpgs. I went to change the "Open With" program and Preview wasn't on the list, nor could I select it. When I went to "Choose Other," the menu bar and all my desktop icons disappear.
Same thing goes when trying to access the Applications folder from the Desktop: the top menu disappears, along with all my desktop icons, and then they come back in about a second or so.
I created a new user account just to see if anything would change, and I was able to access the Applications folder from the other account.
I don't know if it's related (probably is), but my computer is running slower than usual. Safari also unexpectedly quits on me quite a lot (maybe every other day.)
Any help would be appreciated. Thank you!
MacBook Pro 15" 2.33 GHz, Mac OS X (10.6.6)