The forums have been fixed, and all topics should show as expected now.
01 Mar 2009 - 10:03
Many thanks to Poseidon Simons who worked with us to help solve the forums issue.
We had a spammer create an account on the site, and who had begun to spam the forums with advertisements for a dating site. In an attempt to prevent further and future problems with such accounts, I had put some code changes into place. Unfortunately, that created some problems for non-admin accounts that I didn't not see when logged into my own (admin) account.
With Poseidon's help, we were able to isolate the problem and repair it. The forums are again accessible to those of a non-admin flavor.