RUNDLL32 eating CPU time.. only when not online!

[Jim]

Hi all,

I noticed that (because of the installation of some software
I can't manage to track down anymore) RUNDLL32.EXE and
SERVICES.EXE eat all CPU time when the CPU would otherwise
be idle..
I noticed though that this happens only when I am offline
(Internet).. but they don't eat CPU time when online instead.

How could I track down what is causing the problem? I may
write a dummy RUNDLL32.EXE to see what command line params
it gets each time it was launched.. but, is there a simpler
way, and that offers more probabilities of success anyway?

Any hints?

Thank you!
John