My 10BTC have been stuck for 3 days (one of the over 3000 transactions).
So as mine it is only 2 1/2 days but they lie in their support page mentionning that all have been refunded!!
The support page does not mention for how long a transaction must have been waiting until it is considered stuck. I think it is a week currently, but have asked someone at MtGox support to specify it in the support page to avoid confusion and the spread of panic.