STORM2K

I have a stupid question 4 you guys..

How come everytime I've been trying to reply 2 a post it keeps telling me "Invalid session, please resubmit the the form" lol or something along those lines..

They have had some problems with the system...
See if this link helps:
http://www.storm2k.org/phpbb2/viewtopic.php?t=93008