Hi, I'm also having this same issue. It's been 12 hours since I deposited around 5 BTC into my instawallet, but the funds haven't appeared. In my case though, not only does blockchain confirm that the transaction went through, it also says that the funds were subsequently withdrawn into some random bitcoin address that isn't mine. What the heck is going on here? Anyone know if this is going to be resolved? I really hope I haven't been scammed out of my money.
Also: There are other reports from a few other users with the same issue. I tried emailing instawallet suppot and waiting for a response.