Forum downtime

[Doom]

Last few days i have problem accessing forums from my home (this i write from work). Other player yesterday had access to the forums so it may be problem on my part.
I always get Connection timed out error. I use firefox, computer is clean of any junk (viruses, trojans etc), firewall is properly set up. Problems is showing later in the day (GMT+1).
Other forums and web pages i visit are shown without any problems.
Any kind of help would be appreciated. Thanks.