My % Processor oscillates from <5% to 30-90 % with a 3-second period. It's
the same with no applications running (minimized in the task bar) and with up
to 6-10 applications. The task manager shows more than 50 processes running.

Is all that normal?

Try reading kb article #310560

"edpb76" wrote:

> My % Processor oscillates from <5% to 30-90 % with a 3-second period. It's
> the same with no applications running (minimized in the task bar) and with up
> to 6-10 applications. The task manager shows more than 50 processes running.
>
> Is all that normal?
>