We have a GMS Server on W2K3 running since August 06. Everything was running fine so far, but over the last weekend, a File grows over 4GB and we do not know, why or what this file is used for - maybe anyone of you know.

The Files are in ...\Mobile Suite\PIM\SharedFileSystem\77\....sfx.
The sfx File takes up 4.7 GB, the Log File 17.6 MB. The User this Directory belongs to was created about 2 Weeks ago, synchronizing a WM5 Device.

Can I delete that file, or what is it used for?
Thanks for any Tips on that.