That is interesting.  I too got hacked with two transactions (Feb 25th)  to the same address (12gEgguL2ciHqerypstKM5WYCMcxRKsnQ4) you listed.  I didn't notice until I cranked up the 0.8.6 version wallet a couple of days ago.  That is an address that user tazja claims to be his/her address.

You can see his reference to the address here in https://bitcointalk.org/index.php?topic=259649.msg4145690#msg4145690

Perhaps we can talk to him to get our coin back and/or find out why his/her address would be the place to send coin in a hack attack?