Hi, the sidebar on the front page of kudelka.com.au is appearing below the content. This doesn't happen on single posts or pages.
The theme is twenty twelve. The sidebar was working fine in 3.4.2 but then stopped working (I am not sure exactly when) so I upgraded to 3.5 but no change. I have also tried deactivating all the plugins but no luck.
The only hack I made was to point the header to an internal page rather than the front page, but this had not caused any problems with the sidebar until recently so seems unlikely to be the culprit.
Any suggestions much appreciated.