Joomla - template dissapearing

I have a Joomla Website located at http://www.Mi开发者_高级运维keSilvis.com, and upon going to the site initially everything looks fine. However if you go into the site and click any link say web-design

You can see that the default template is no longer being displayed. I have tried changing to a different template but that does not seem to help.

Any help would be greatly appreciated.

Thanks, Mike

I have discovered the answer to my question. I should have updated this a long time ago.

Something with the URL Rewriting engine built into Joomla, was throwing errors. I turned it off and everything was back to normal!

Thanks for your help though.