Hi everyone

Recently I have upgraded my server to the latest php 5.3.10 . After that I noticed that my joomla site showing an Internal server error . But all the other pages and admin section were OK . I have tried every way and then disabled all the k2_content_modules on the homepage and now site is working fine . Basically the error I,m getting in the error log is file not exist/found error . Its indicating my template/css/k2.css which is absolutely OK when I have checked . I,m also getting a 404.shtml , 500.shtml not fund error also .Not understanding what is the reason. Can anyone help please ?

Thanks