it seems to me that my changes to the dasBlog have increased the speed in a way i will descript as more than good. the XMLSerialisation now is only running if there exist no cache object for the source xml data file or this file has changed. the hole banch of running against the file io subsystem i hope is now running on an minimum, that's what real needed. but on the other side maybe the mail from pop3 service is now craching??