I'm using the same style as I used on the test website (which worked) so I have no idea why it doesn't work on the upgraded forum of mine?
I've even copied and pasted the CSS template just incase I might have made any changes and forgot about them from the working website to the one which currently doesn't work, and still no joy.
--------------- Added [DATE]1355638200[/DATE] at [TIME]1355638200[/TIME] ---------------
Sorted the problem.
I just overwrote the CSS file with the default vbulletin style and it seems to work fine now. Just need to realign a few things and it'll be sorted.