Please check your system for keyloggers and dataloggers - there are a few well known loggers that target Linux specifically. The PIN does not have to numeric, nor short - in fact, the longer and more convoluted it is, the better. When you make a withdrawal, the address that the Bitcoin were withdrawn to is not shown for security purposes. Please check any BTC receiving addresses that you use to see if you may have withdrawn them. That may not seem likely, but possibilities need to be eliminated in order to draw the most likely conclusion. You will have to open up a Support ticket on the main site if you want this looked into further; we have no access to the administrative sections of the site so can be of no more help from here. You can reach SR Support by clicking the 'support' link in the bottom right corner of any page on the main site. You may be waiting up to 48 hours for a response depending on how busy they are so please include as much information as possible in your initial message. Please refrain from signing anything here with your real name - the less you link to your real identity the better. Libertas