I have two DNS servers in my office, Gob and Tobias. They are both running Ubuntu and BIND. Their BIND config files are identical. We've been using Gob for the last month or so. When we switched to Tobias for the first time today, everything kept working fine except we were no longer able to print. Switching back to Gob fixed the problem.
Any idea as to why changing DNS servers, which doesn't seem to me to have all that much to do with printing, could make it so people can't print anymore?
Edit: After some more testing, it's unclear whether only Gob works, only Tobias works, it works sometimes under either, or if the printing problem is even related to the DNS server switch at all. Pretty cool.