Hi,
Just updated to version 1.9.1.1 through Magento Connect in admin. I had a problem with Internal server error directly after but it was fixed by changing the permission for index.php to 755.
I have a harder time solving 404 (page could not be found) when I try to get to the Magento connect to check for updates. Anyone has any ideas for this? Might be a permission error this also?