HBHOSTOL.DLL is an adware program Adware.Hotbar. HBHOSTOL.DLL monitors user Internet activity and private information. It sends stolen data to a hacker site. Related files: %Windir%\Downloaded Program Files\HbInstIE.dll %System%\HbGuard.exe hotbar.exe HBCORESRV.DLL HBINST.EXE HbToolbar.dll HBHOSTOE.DLL HBHOSTOL.DLL HBHOSTIE.DLL HBSRV.EXE ShprRprt.exe ShprRpt.dll More info: http://securityresponse.symantec.com/avc... Removal: Remove HBHOSTOL.DLL from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.