Damn. I don’t know what to tell you. If I’m lucky, it’s a bug in WordPress 2.5 which will be fixed when 2.5.1 comes out in another three weeks. But it could be a problem with my theme, too. I’m afraid I’m not geeky enough to troubleshoot much beyond what I’ve done already. All I can tell you at this point is to try downloading Firefox and see if that makes a difference.