Is My OSCommerce hacked ?

[PhpNurd]

Hi guys

 

I suddenly started getting this error on my site, which was running fine till yesterday.

Pl suggest me ... has my site been hacked? or is it a server problem ?

 

Rest of the php softwares like mambo etc are working fine on the same server.

 

Warning: main(includes/configure.php): failed to open stream: No such file or directory in /home/xpindia/public_html/os/includes/application_top.php on line 29

Warning: main(includes/configure.php): failed to open stream: No such file or directory in /home/xpindia/public_html/os/includes/application_top.php on line 29

Fatal error: main(): Failed opening required 'includes/configure.php' (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/xpindia/public_html/os/includes/application_top.php on line 29