<A target="_blank" href="http://blog.darrenduke.net/Darren/DDBZ.nsf/dx/lotus-notes-8.5-and-server_maxsessions-error-the-fix.htm">Darren Duke ran into a problem where his laptop kept losing network</A> connectivity. The only hint it gave was a TCP/IP protocol stack error saying it was out of memory. Darren found a fix you might be interested in.