100% CPU

[wcj9996]

Hello:

I am running 10.04 on an AMD-64 CPU.  I have been noticing a slowdown on 
occasion for several months.  System Monitor shows 100% CPU  and more 
network activity than I would expect.  This occurs when Firefox and 
Thunderbird are running.  Running 'top' shows 'virtuoso-t' taking  46.9% 
of CPU and two instances of 'nepomukservices' taking 18% and 15% of CPU.

Are these malware of some kind?

Thanks for your help.

   walt

-- 
-----  walt  wcj9996 at frontier.com -----