I have installed mysql-server 5.5 and phpmyadmin. It was working before but currently I am having Internal Server error for phpmyadmin.
In apache server error log following message is showing.
[Wed Jan 21 02:38:26.501839 2015] [authn_file:error] [pid 12948] (2)No such file or directory: [client 127.0.0.1:42201] AH01620: Could not open password file: /etc/phpmyadmin/.htpasswd