Okay guys, I've had to completely firebomb the ability for guests to post on the forums from now on. I hadn't really meant to have it on in the first place, but that's why we've had topics just vanishing, there's an issue with the guest user ID's causing the system to crash out. I went into the sql tables and manually changed the ID's to bring the pages where guests had posted back, and it's an issue that should be corrected in the next version of the forums due out soon, but easiest way is to just not let guests post.

:)

In related news, I'm going to be changing the authentication and login package I use here in the next few days to be able to use a 'keep me logged in' option for the site so people don't have to log in every time they visit. I'm just trying to find one I like, or that fits in with the layout of the page.