OS X :: Applications Won't Open Until Restart - Snow Leopard?

I've been having a problem with Snow Leopard since I installed it, and it's been bugging me like mad, but I haven't been able to find a solution or anyone with a similar case anywhere. Today, however, I tried again, and I ran across this news article, which perfectly described my problem:

Quote:

Finally, twice in the past week now I have experienced a very old Mac OS X bug that I thought was gone for good: All of a sudden, when I try launching an application, the application's Dock icon starts bouncing endlessly in the Dock and the application never fully launches. Instead, eventually (after a few minutes of endless bouncing), the bouncing stops, but the application icon stays there without the status light indicating that it's open, and right-clicking on it results in an "Application not responding" message. You can force-quit and try again, but it won't work any better the second time.

And once this starts happening, if you want to get anything accomplished with your Mac, you really have no choice but to restart the entire machine.Has anyone experienced anything similar and/or knows how to fix it? It really inhibits me from doing almost anything with my Mac when I can't open any applications./edit: To add some context, this only happens after my laptop has been running for a while and seems to affect some applications but not others (maybe those that have already run since restart are fine?). I still have over 1.2gb of free RAM while I try it, so I don't think it's a memory issue either.