SVN not working

If SVN stops working with error:
 
Authorization failed
svn: OPTIONS of 'https://svn.qualityunit.com/svn/main/PostAffiliatePro/trunk/server/plugins/AutoResponsePlus': authorization failed: Could not authenticate to server: rejected Basic challenge (https://svn.qualityunit.com)
 
it is possible that access to svn password file is not possible (permissions)...
 
log in to host.x-member.com as root
 
cd /backup/home2/svnqual/etcls -al total 20drwxr-x---   3 svnqual nobody  4096 Dec 13 08:11 .drwx--x--x  11 svnqual svnqual 4096 Dec 13 08:11 ..-rw-r--r--   2 svnqual svnqual    0 Sep 29  2008 passwd-rw-r--r--   2 svnqual svnqual    0 Sep 29  2008 quota-rw-r-----   2 svnqual svnqual    0 Sep 29  2008 shadow-rw-r--r--   1 svnqual svnqual 1559 Nov 29 10:24 svn.access-rw-r--r--   1 svnqual svnqual  955 Nov 29 10:22 svn.passwddrwxr-x---   2 svnqual svnqual 4096 Sep 29  2008 svn.qualityunit.com
important thing is owner or group of svn.access and svn.passwd. Check them out.
or run direclty in svnqual directory fix script checkRights.sh