hm well i read now trough all this comments and i have done all fixes,searched the registry entries and run 5 AV/trojan programs (Kaspersky,TheCleaner,AVG,Stinger,Panda) but no AV program found this trojan. then i started trendmicro online scan and it found the malware.Bkdr_Ircflood.X thingy . But always when i open my mirc the virus is there again i dont need to connect to a server or smt just load it and the virus is active . there is no new process running then like they said on the trendmicro hp so there are no registry entries aswell .
dont know what to do now hope trendmicro comes up with a solution/patch or whatever