Hunrers of Errors in servletd_err.log

System

TeamSite 5.5.2SP2? on W2K.

Webdesk was not working and I found the attached in servletd_err.log. Restarting TomCat seems to make WebDesk work...for a while.

Any idea what is causing this? The machine has plenty of memory. Is there some way to configure TomCat to take advantage of it?