Today I checked my blog and noticed the right sidebar (which includes widgets like my about me section, a tag cloud, etc) has moved from the right side to under my 7th post, then the posts continue after it. It also appears like this (incorrectly) on the most recent post's page (http://bit.ly/MEZnDf), but appears correctly on all other posts' pages, like here: http://bit.ly/NfcS1r.
I haven't touched anything having to do with layout, and I'm using the Vigilance theme. This is consistent across Firefox, Safari and Chrome.
Can someone please help? Or is it a bug?
The blog I need help with is lifewithchcats.com.