My SBS 2011 system is running so slowly that it is unusable. Each mouse click takes minutes to respond. It appears that the system process (PID 4) is running continuously on one of the cores. There is plenty of memory and the other cores are quiet. Task manager doesn't show much I/O either but I can hear the hard disk working hard. So the theory is that the OS is hammering the HDD with some low level activity that doesn't register with task manager. Everything else isn't getting a look in. The system is so slow it is almost impossible to collect diagnostic information.
Any ideas ideas would be appreciated.
thanks
Since posting I have located my install media and a USD DVD drive which works.