Ok this is a known bug. If it happens to you or to someone you know please post it in this topic and I will fix it.
This bug is only visible to users with Internet explorer. If you use Firefox (maybe other browsers too) you'll be
able to see the guestbook perfectly.
Basically there are some posts that, while visible with firefox, cannot be seen with internet explorer. Also with
internet explorer it's impossible to post in the guestbooks with this problem. As of now the only solution is to
delete the post that causes the problem.
If you see a guestbook with this problem, post here. Say clearly how many messages you see.
For example, if you see 4 messages and then nothing, it means the 5th message is broken. Say : "I only see 4
messages and then nothingin this member's guestbook, I cannot post".
This bug might also happen to gallery or such. If it happens to a gallery, post it all here as well.
Now before somebody thinks "Hey I can have those messages I don't want in my guestbook deleted", I will check every case with Internet explorer. So don't bother, you'll only get a warning.
This topic will stay pinned until the bug is solved.