Remote Desktop causing high CPU usage?

Archived from groups: microsoft.public.windowsxp.work_remotely (More info?)

Here is the situation. When at my XP Pro workstation all is well. CPU usage
is rock steady at <4% unless I open something substantial and then it
settles back down. When using Remote Desktop to login to the same
workstation the CPU pegs at 100%. Looking in taskmgr, I see that the
culprit processes are "ccapp.exe" (part of Systemworks/NAV 2004) and
"svchost.exe". Ccapp uses between 75-80% and svchost whatever is left. What
would cause this? I did a full system scan with NAV, The Cleaner, and
Trendmicro's online scanner but nothing was found.

I tried changing the options in RD but no effect. I shutdown everything
possible in the workstation using msconfig but still no difference. If I
kill ccapp the CPU returns to near zero until I restart ccapp again.
Frustrating!

I made sure all the Symantec files are up to date and checked their web
site. It mentions several causes of high CPU usage with ccapp but only
names one: using it with a firewall. I was using a registered version of
Zone Alarm Pro but even tried removing it and all the entries in the
registry but no change.

This setup was working fine for months until the last few days. What
changed I haven't a clue. Google turned up nothing too...

I am running XP Pro w/SP1, 1 GB ram, and an AMD +2200 CPU (if that helps).

Thanks in advance,
Dave