Gox has had massive withdrawal issues for a long time, and yet some people kept on trusting that site until now. Now if you lost money to Gox, can you really blame Gox when it was you who was stupid?
I had no withdrawal issues, at least no more than I had with any other exchanges. But perhaps it was stupid of me for thinking that they were honest about their cold storage. However, any exchange may not have enough (or may simply decide not) to pay your balance.