I moved a Joomla installation from one server to another. Copied the database and all files. When I moved it into place it all loaded, everything worked fine and after a period of time (like 20 minutes) it now just loads a blank page.

I've traced through the Joomla framework, if I put an echo in before the call to `$app->render()` it works fine and outputs, but the call to `$app->render()` never enters. I.e. I put an echo statement at the top of render() and it was not output. Very bizare, no errors, no output.

Any ideas? Joomla 1.7.3.

EDIT: I just timed it, it worked up until 30 minutes exactly. At this point I get two lines in PHP error\_log - 

```
[22-Mar-2012 01:35:46 UTC] PHP Notice:  Undefined offset: 2 in /home/off/public_html/components/com_k2/router.php on line 114
[22-Mar-2012 01:35:46 UTC] PHP Notice:  Undefined variable: text in /home/off/public_html/templates/gk_boutique/error.php on line 27

```