Apparently there was an issue with the right sidebar for those of you who use Internet Explorer: the right sidebar didn't show up and the footer often wasn't there. This seemed to have something to do with the amount of posts on the main page and should be fixed for those of you who make up 20% of my traffic. I apologize for any inconvenience this may have caused you in the past.
P.S.: I forgot to thank Mulluane for her help, which was quite rude of me. Thanks Mulluan!