I'm very sad, I have lost all my program thanks to a virus.

Hi all, I'm here and I'm very sad, I like F-secure 2012 it works good but this time it has failed, I opened what was supposed to be an adobe update, then every icon on my desktop started to show like deleted, then realized that it was truth, second by second every program running started to be killed, I checked c;\program files\ and yes every folder in there was being deleted, I tried to open F-secure 2'012 internet security and I got the message "service error or something like that" then it was just shut down, I restarted my computer and there was no F-secure in the system tray, I can't do anything I haven't even get rid of this threat,... malwarebytes was deleted and everytime I install it it got deleted again, I run hitman Pro with no score, Im trying to download super antispyware as a last chance to get rid of this threat, I'm a lill disappointed by the way I believe to be protected by F-secure internet security, I mean its okay if u got infected and etc but something that deletes almost everything on my computer is just wrong, where is the "Auto protect" function of F-secure, I'm really sad about it, I had already submitted the file with no response, can anyone give me a hand? =(