Can't sell Bitcoin on Mt Gox?

[AngelusWebDesign]

For the last 1/2 hour, I've been trying to sell (a few, as in 3) BTC on Mt. Gox.

For the first time ever, I got the message:

Selling....

for a few seconds, followed by:
Another trade is still in progress, please retry in a few seconds

I've been "trying" for 30 minutes! What's going on?

Related: The price seems "frozen", and at least one website which has some awesome open order data is down.
Maybe all these problems are related?

[tehcodez]

Aliens are cashing out. Private transactions only.

[Mike 71]

After selling my first BCs at a high price today i was watching the falling price about reaching my rebuy line, when it stoped moving.

Its more then an hour yet, i think its more then two already.

I just wondered about that, but i thougt it was because amercias geeks went to bed right after the sunrise ;-)

[V2-V3]

It takes some time for the trade to take place and update on the MTGOX site I had to wait an hour or two for it to update on my account.