Well I think I will need to look at the
vb templates to see what template that might be but I am not sure we modify any forumdisplay templates we have our own templates so have you tried reverting any forumdisplay templates if you have any altered in that style?
I think I would be hard pressed to find a forum that has many forums that deep with vbgallery. I would also make sure you disable any plugins except vbgallery