This thread is now ancient, but I came across it while looking for help re a temp file of a similar nature. it's one of those "temp" files that gets created when, foe example, you save something that you've received/accessed from the internet or an email. When you click on "Save as", the SaveIn list will show files like that, but ignore that option and use something more sensible like My Documents. The existence of such gobbledegook files suggests that at some careless moment you may have actually saved something to it. You can delete it.