wierd error message at top of forum index

[thepub]

Warning: in_array() [function.in-array]: Wrong datatype for second argument in /includes/class_postbit.php(300) : eval()'d code on line 3

can anyone explain what I might have done to cause this or what it means?

[TTG]

Disable the latest product you've installed and see if it solves the problem. If it does you need to check you have the latest version of the product.

[thepub]

I did that and nothing changed. Oddly enough my forum width changed a bit too it seemed to "cut off" a bit on the right side of my forum and I have a fixed length.