We had a recent hang on a windows server 2003 SP 2 system. We had to power cycle the box and when it rebooted we discovered that it no longer had it's network configuration.
If you got to set the TCP/IP properties it refuses to accept any thing but dhcp which won't work in our situation.
My background is unix/linux so forgive me if I'm not calling something by its correct name.
Has anyone seen this or better yet have a solution for it?