A few people (including myself) have got an error page up when trying to post certain posts:
Internal Server Error
The server encountered an internal error or misconfiguration and was unable
to complete your request.
Please contact the server administrator, mailto:webmaster@sanflfooty.com and inform
them of the time the error occurred, and anything you might have done that
may have caused the error.
More information about this error may be available in the server error log.
Additionally, a 404 Not Found error was encountered while trying to use an
ErrorDocument to handle the request.
As mentioned previously its actually a certain "string" of letters or numbers in the post that causes this due to a security function.
It happened to me today and I kept changing the wording of the post until I got it to work, this along with a post that Stan couldn't get to work but that he emailed me has shown me exactly what the problem is and how people can avoid it.
The site doesn't like the two letters "CC" together for some reason, when I expanded this to "Cricket Club" or put it in quotations it worked fine, Stans post was discussing the Marlybone Cricket Club but he abbreviated it, its definately the issue for some reason.
Basically if you want to avoid this error or get it, just click back and amend your post so "CC" is either in quotation marks or expanded.
If anyone else gets this error and don't have "CC" in their post let me know by email with a copy of the post (blick back and copy it, then past it into an email) and I'll investigate further but I'm fairly confident I've nailed ths sucker down now.
It had me bamboozeld for a while but this would explain why it was a more common occurance on the Cricket Forum as opposed to the others.