Ipdb.dll is a mass-mailing worm W32.Bagz@mm. Ipdb.dll tries to terminate antiviral programs installed on a user computer. Related files: %System%\dl.exe %System%\syslogin.exe %System%\jobdb.dll %System%\ipdb.dll %System%\wdate.dll Adds the value: "syslogin.exe" = "syslogin.exe" to the Windows startup registry keys. More info: http://securityresponse.symantec.com/avc... Removal: Remove ipdb.dll from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.