All I know is that I have been using that encrypted standard bitcoin wallet making transactions since 8/4/13 without a single issue.
last night I sold 500 PTS @ 0.007 and transferred 3.88029999 to my wallet
now today that exact 3.88029999 has gone missing from my wallet leaving the remaining balance untouched.
Sounds too much to be a coincidence
Exchange owners attitude - tough shit