[eluser]rundmc[/eluser]
I just started seeing this problem today as well. Where it errors out it's saying that the $config array is empty (line 187 of the codeigniter/Common.php file) and the path to the $config file is correct (or else I would always see the error). Problem exists for both Firefox and Safari for me. I can hit refresh a number of times, before it errors. I'm on a mac and have both PHP 5.3 and 5.2 (via MAMP). The 5.2 version on MAMP doesn't seem to be a problem and it seems to maybe something with PHP 5.3 or perhaps the Apache instance. I restarted my Apache instance (on the Mac I went to system prefs, and toggled on the Web sharing) and so far I haven't seen that issue again... strange.
