When I run CCleaner 2.30.1130, it seems to choke on the file C:\Documents and Settings\user\Local Settings\Temp\mnc16.tmp. Nothing happens (no timeouts or anything), but the completion percentage just stops moving. Judging by the file name, it's some kind of temporary file and my guess is it's open, which prevents CCleaner from removing it. The thing is that I haven't been able to identify which application on my system uses that file (despite extensive system monitoring and Googling). Has anyone seen similar behavior or has any ideas what that file is for? Could it be associated with a virus or some other piece of malware?