On 11th May, 2012, 18,547 BTC were reported stolen from bitcoinica.com as stated here: https://bitcointalk.org/index.php?topic=81045.0
The bitcoinica.com website is unresponsive at the time of writing this. Are they planning to reopen? Have they stated whether their users' deposits will be refunded? If yes to either of those question, have they give a timeframe?