I'm a bit confused about this problem that's cropping up on my forum. When I go to certain random sections in the forum, i.e. the 4th page in a forum, it brings up an internal server error. It keeps doing that, until a new thread is posted, at which point the same will happen on a different part of the site. I thought it was something to do with the caching, but when I clear that out, the problem is still there. I don't quite understand this problem, is it to do with XenForo or is it a server problem? And if the latter, what do I ask my hosts to look into for me (I'm a bit clueless when it comes to server settings).