I have the same problem after upgradin to vb4.
I log in and after enter when it's suposed to log you in..the site shows that i'm not loged in.
I have to refresh the page to apear loged in.
--------------- Added [DATE]1298454859[/DATE] at [TIME]1298454859[/TIME] ---------------
i forgot to write about the other problem that i have with the administrator. when i log with the admin the forum doesn't apear right, i attached a picture.
this problem also apeared after the upgrade to vb4 from vb 3.8
i hope someone cand help me.