Hi, I somehow fixed Sf.bin continually popping out in the in Windows Task Manager Processes Tab, making your computer Super Slow. This Fix works with Avast! PRO Antivirus.
Disable the Avast! Shields Control, select Disable until computer is restarted this will make your computer speed back to normal. Then go to Control Panel, Add-Remove programs, select Avast! PRO Antivirus, Click Change\Remove. When the Avast! Setup Screen Appears go to Repair and click Next, wait until the repairing process is finished, then restart your computer, this will help Fix the Sf.bin.