This is from one of the posters on my Disc App 11519, he was posting fine up until a couple of days ago, below is his description of what's happening and here are the time stamps from his messages...

Thu Aug 9 3:09pm
Thu Aug 9 3:21pm
Thu Aug 9 6:10pm
Thu Aug 9 6:11pm
Fri Aug 10 10:41am

I am allowed to log in. Then it takes me to the page where I can write my subject and my message. Then when I click POST REPLY I get this

Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator, webmaster@yourwebapps.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.

Then when you reply I get the e-mail telling me there has been a reply. Then when I click the link and come here my post is up and so is the reply.