Withdrawals have been very slow lately, as if they are all requiring manual review. I'm not sure what their issue is currently, but I don't think they are running away with our coins. I'm sure there will be an explanation soon enough.
We don't detect any withdraws that have processed slowly. If you have an issue, please send us a PM and we can look into it. It's always possible that the blockchain is slow to confirm transactions if a new block isn't mined quickly.