Just want to clarify that with 1.21 on my XP SP3 systems, a Quick Scan that normally took 2-3 minutes with 1.20 now takes 20+ minutes. mbam hangs (more accurately a long pause) after the first 10-15 seconds of scanning or so, trying to exit at this point creates an application hang event ID 1002 error by mbam.exe in windows (basically a non-responding application). A Quick Scan will finish if you let it but it takes 20+ minutes. It seems to scan then pause, scan then pause, cpu usage for mbam.exe drops to 0 when it pauses, and mbam is non-responsive during the pauses. Turning off TeaTimer and SD Helper in Spybot does not help, nor does turning of Spywareblaster, nor does turing off all AV real time scanning. I am also getting this fp with mbam 1.21: Registry Data Items Infected: HKEY_CURRENT_USER\SOFTWARE\Policies\Microsoft\Internet Explorer\Control Panel\Homepage (Hijack.Homepage) -> Bad: (1) Good: (0), when Spybot S&D "IE Tweaks-Lock IE start page against user changes" is ticked. Hope this info helps.