the DNS entry for www.triedia.com points to the IP address 66.79.10.214, but the address of the board's server is 64.274.6.14. Simply put, www.triedia.com does not point to the location where the board is.
Whois sais last update was on 07-Jan-2002 through directnic.com. Either the domain owner did this on purpose or the DNS entry was hacked. The owner of the board said on Anabolex "We have been hacked, and Im working on the fix. Use the IP for now".
Everyone who did not have any problems accessing the site went directly through http://64.247.6.14/forum/... ; since the IP address is already resolved, the browser will not do a DNS lookup and these users were not affected by the change.