When members log in, it does not show / posts not showing either

[pityocamptes]

Here is what what member said. Anyway to figure out what is going on??? Thanks.

When he posts and goes back to forum it does not show the post. I am experiencing the same thing as an admin, I have to constantly refresh the page.

Also,

"Now, I sign-in, go to general discussion, click on my post and only view half of the screen. I look at the red 'guest invited' seal and realize I need to login again. I keep having to login over and over. "

Could it be an htaccess thing or caching? Never had this issue until recently...