Big trouble, little China! Display probs!

Hi, this is starting to drive me nuts. I just ran eraser on unused c: drive space, that's the only thing I can think of that's happened recently, and all of the sudden websites aren't displaying properly. I'm including two examples, one of pubmed, another of a different forum I visit. Pubmed isn't displaying much at all, and the forum isn't displaying avatars, user quotes, sometimes whole posts, etc. Even when I tried to use the return button the first time I made this post, my screen went haywire, so sorry for the chunk of text. Did I delete a file? I can't imagine what happened, or how to fix it. Any help would be appreciated. Edit: I also ran McAfee computer cleaner, and it deleted some stuff, but I can't think of what that would have done. The only thing I can think of is that pubmed uses some special type of display since it's not fixed text, it's like a search display or something, and forum avatars are changable, etc. This forum and another forum I looked at display fine, so did I delete some sort of Java file, maybe a flash file...? Thanks for any help.

 

Oh well, I restarted my computer, and it looks like everything is back to normal. Thanks anyways!