If you post in Discussion > Buying you will receive a quicker response.
Rather than corruption, or the system being ****ed up, it is an issue related to bid sniping. eBay do warn buyers that it takes a few minutes to confirm an auction win.
Elsewhere they give further details:
'If you've recently experienced an auction win only to lose it later, it's understandable to be confused and
upset. eBay's system can sometimes lead to unexpected outcomes, especially when bidding in the last few
seconds.'