On our production server we get the following message when we log in after 1 week uptime
Windows cannot load the user's profile but has logged you on with the
default profile for the system.
DETAIL - Insufficient system resources exist to complete the
Windows 2003 SP 2 32bit
Intel Xeon E5420
Our production System has a SQL Server 2005 running (~1.7GB RAM all the time) and the application consists of 40 Java processes consuming ~2.7GB
There are over 3GB of RAM free.
To get rid of the problem temporarily we have to reboot.