Yes, indeed - do the following:
1. Clear your browser cache
2. Delete your cookies, or at least all the ones that are related to SK
3. Make sure you use
http://www.shatteredkingdoms.org/forums as the start of your URL
4. Enable the 'Log me in automatically' box, if you can
One of the most common causes, for me, was when using a tabbed browser (eg,
Maxthon or Firefox), make sure you complete the login sequence in one tab before launching all the other tabs -- hitting the forums twice in quick succession will cause you to login twice, which means your last login time will be about 1 second prior to your current login, during which time there have been no new posts.
This 'most common' explanation can sometimes apply to people who have don't use tabbed browsing but haven't met the item (3) requirement, hence the first link you click on in our forums cause you to login again [because the cookie used at login was stored using a different URL than the URL used in all our links].
Just a guess.