ok, my provider told me, thats from active gzip compression with his lightspeed server. theses files would be recycled after 48h by the server itself. I will keep an eye on this.

You are right, its odd, but seem server related.

my board: http://www.dragonclan-forum.de
my hobby: http://www.biker-reise.de
Ich kann bei Fragen zu UBBthreads in Deutsch weiterhelfen oder es zumindest versuchen