Polarcrypto.dll is a Spyware.MessageSpy. Polarcrypto.dll records online chat conversations. Related files: %ProgramFiles%\msaolim\msaolim.exe %ProgramFiles%\msaolim\unins.exe %ProgramFiles%\msaolim\unins000.dat %ProgramFiles%\msaolim\unins000.exe %System%\polarcrypto.dll %System%\polarziplight.dll %System%\Richtx32.ocx Adds the value: "msaim" = "C:\Program Files\msaolim\msaolim.exe" to the Windows startup registry keys. More info: http://securityresponse.symantec.com/avc... Removal: Remove polarcrypto.dll from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.