Forum now blank

[Liquid1ce]

Went to my forum today clicked on a post & its returned a blank page =, so i upgraded to latest still showing blank page, i could view the cms latest posts etc nothing been changed to what i can see ive disabled all plugins and still showing blank now im stumped so anyone have any idea's what i can do next

i can still view everything else apart from forum home & posts

--------------- Added [DATE]1288185067[/DATE] at [TIME]1288185067[/TIME] ---------------

Now getting the error Warning: array_merge() [function.array-merge]: Argument #1 is not an array in [path]/includes/class_bootstrap.php(1280) : eval()'d code on line 78

which is
<b>

PHP Code:

        $this->load_facebook(); 


--------------- Added [DATE]1288187279[/DATE] at [TIME]1288187279[/TIME] ---------------

seems to be fixed - it was mail que using up the sqldb
now to fin a way to shrink the database