I seem to have the same google/yahoo hijacker that a few others have posted here. I leave the windows firewall on and have been running the microsoft security essentials program for a few months now. Today when the hijacks started I immediately noticed the little microsoft security icon was no longer in the lower corner. I have to reenable it but it won't stay running, even if I go to services.msc and set it to automatic and start it, within a few minutes is changed back. I ran new updated version of Malware bytes in safe mode, it came up with nothing, I ran an updated version of spybot in safe mode and it only came up with Microsoft.Securityessentials_disabled or something along those lines, when I told it to fix it, nothing seems to have changed. I can run the Micro Sec. in safe mode but it finds nothing. I can not get the MSC to start and run other than in Safe mode. It always reverts to disabled now and the firewall will be turned off. Please help. I am running XP 32bit, all current updates with windows and with java and adobe.