a transaction has been in status "pending" in Bitcoin-Central for 14+ hours.
When an exchange or other EWallet provider keeps most coins in cold storage, there is a supply management issue that arises. This is similar to how bank policies exist so that if you want to withdraw large amounts of cash then you may have to wait a few days for the bank to get a transfer of the cash delivered first.
Just so you know 90% of the bitcoins are in cold storage
I don't know that is what happened in this instance, but that would explain why a delay might occur.
Paymium (who operates Bitcoin-Central) is expanding their exchange and seeing fast growth with Instawallet and their other services. It is possible they are needing to transfer from cold storage with increasing frequency as their services become more widely used for larger and larger amounts
