Just to let folks know there is a nasty malware bug about that attacks steamui.dll if it gets into it you will notice an error message saying "unable to run steamui.dll" which means Steam and all your games etc will not run. The now infected file tends to show up so the file reads steamUI.dll or steamui.DLL but can also sometime not change the file name. There is loads of so called fixes on the net BUT a large amount are scams. My recommendation is to do a copy of steamui.dll and keep it safe. Then if you suffer an attack just replace the file.
Dazmond "Should I go sniper"