Pentaho PDI 4.2.0 very high load average in SuSE 11.2

Hi!,
Does any one experience a very high load average when using Pentaho PDI in SuSE 11.2

Old operating system: Red Hat Enterprise Linux WS release 4 (Nahant Update 8)
Load Average: 0.30, 0.51, 0.69

New Operating system: SUSE Linux Enterprise Server 11 (x86_64) VERSION = 11 PATCHLEVEL = 2
Load Average: 19.51, 11.79, 6.44

Can you please recommend how to work this around?

Thank you very much.

Thanks,
Gerald