What file is this?

Pretty sure it's a Punkbuster client file for Wolfenstein, Enemy Territory etc. I think you have to keep it to make sure Punkbuster keeps working properly.

 

Dunno, but "db" usually denotes a database file of some sort. Whatever it is, it probably doesn't belong under your / (root dir). I'd open it in TextWrangler or other text editor and check out the contents (try the Hex Dump command if it's all garbled). That may or may not provide a clue.

 

Totally right (name wise, assume is the same file). this file for me appears in Americas Army. Strange that the file appeared in the base directory and not a support folder.

 

No problem.