Late 2008 MacBook Pro is stuck a lot lately
The cursor stops responding for up to minute (without changing to a "beach ball"), lots of "beach balls", delays in typing/deleting, even delays when using arrows. Restarting helped (though it didn't shut down properly), but the problem is back. I'm on 10.7.3, using Safari, but the problem is across apps. I have very little else open at the same time.
Any suggestions would be appreciated! Thanks!
MacBook Pro (+7 previous Macs), Mac OS X (10.7.2)