Dirk,
You can check your cpu load by entering into console mode as root
[root@blah]# top
you will get a display like
11:17am up 1 day, 12:09, 1 user, load average: 0.09, 0.49, 0.41
82 processes: 81 sleeping, 1 running, 0 zombie, 0 stopped
CPU states: 0.9% user, 0.2% system, 0.0% nice, 32.7% idle
Mem: 523800K av, 441756K used, 82044K free, 0K shrd, 342416K buff
Swap: 264952K av, 0K used, 264952K free 22000K cached
PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM TIME COMMAND
15076 root 10 0 1056 1056 832 R 1.9 0.2 0:00 top
1 root 0 0 516 516 444 S 0.0 0.0 0:06 init
2 root 0 0 0 0 0 SW 0.0 0.0 0:00 kflushd
3 root 0 0 0 0 0 SW 0.0 0.0 0:00 kupdate
4 root 0 0 0 0 0 SW 0.0 0.0 0:02 kswapd
5 root 0 0 0 0 0 SW 0.0 0.0 0:00 keventd
6 root -20 -20 0 0 0 SW< 0.0 0.0 0:00 mdrecoveryd
9 root -20 -20 0 0 0 SW< 0.0 0.0 0:00 raid1d
You can sort the results by cpu usage by typing P (note capital p)
This will show you which process is loading up your cpu.
Exit top by typing q
Jon