s_win32.exe is known to be a type of malware. Backup your system and delete this file, or perform a free scan of your system to be certain.

s_win32 and 2nd Thought Spyware can cause major problems with the security of your system, and need to be scanned and removed. Malware and adware can be very tricky. Malware creators know their files will be removed if found, so they sometimes give the files names that are similar to known non-harmful files.

For a quick and Free Spyware and Virus Scan, click here.

Since s_win32.exe was on your system, there's probably more spyware or adware you haven't discovered. Scanning your system for free is the best way to avoid major problems in the future.