are they scammers - or just some problems?
That's anyone's guess right now.
(edit: My guess is no, they're not scammers.)
does mtgox have problems? YES
could they have dealt with those problems better? YES
does their comunication suxx? YES
are they scammers? ABSOLUTELY NO!
as far as i know, there hasn't been a single loss of customers BTCs or fiat. mtgox doesn't hide in the dark or operates more or less illigal like btc-e and bitstamp. i wouldn't trust btc-e at all! even bitstamp doesn't earn more trust, than a few coins, you can afford to lose!
the only really trustworthy exchanges i know are
www.bitcoin.de and kraken. next in line is mtgox and after that nothing for a long distance! if you want to trust btc-e over mtgox, fine! but prepare to see the operators running with your money. nobody knows, who they are!
Agreed that Gox has historically been the most trustworthy Exchange - but this does not change the fact that they are extremely illiquid and the situation is not improving... Occam's would say that they are running out of cash, which doesn't mean they are scammers - but is a call for problems.
BTW: Bitstamp has been pretty reliable too since August 2011. That's quite something in Bitcoin-land.