Interesting.
Yesterday morning about 10am I went on Bitinstant and filled out the paperwork for a Western Union deposit. Went to the little corner store down the street and sent the money to ZipZap. Within 10 minutes the order processed and were sent to me. Then went to blockchain and got a wallet, went back to bitinstant and transferred the bitcoins and they showed up within a matter of minutes.
Not sure. Maybe it's because my order was placed and received prior to the Mt Gox fiasco yesterday by about an hour?
I processed my order at 8am yesterday morning. A couple hours before the mtgox fiasco became noticeable. I think they were having issues from the night before, but, it caught up and eventually the site was screwy. I just got a email from bitinstant about my other order that never went through. They said they reprocessed the transaction and that I will receive my funds soon.