Hi there, I am running SuSE 9.1 pro on a AMD Athlon64 3000+ 512 MB RAM. There is a strange behaviour of the system when trying to backup system files (DDS3 Streamer HP C1537A on Adaptec 2940U). Using Kdat as root (kdesu kdat), transfer rate decreases and system becomes so slow that it almost cannot be used anymore. I watched the usage of memory with ksysguard. Memory filled up and so did the swap-partition. When the system arrives at about 1 GB of swap usage the system almost freezes. Doing the same as a user backing up user data (almost the same amount of data) there are not any of these problems. The same behaviour can be realized when doing a system backup with Kdar. I assume that these root-processes grab all the memory available. How can I limit memory usage of root processes so that they behave like they do when they are running with ordinary user privileges? Thanks in advance Harry