Unexpected output from cvs co

[Chris ;o)]

Could anyone help me with this error,

Error: Unexpected output from cvs co: opendir(/home/glu/cvsroot//../..): Permission denied at /home/glu/cgi-bin/cvsweb-2.0.6/cvsweb.cgi line 1837 cvs checkout: CVSROOT is set but empty! Make sure that the cvs checkout: specification of CVSROOT is legal, either via the cvs checkout: `-d' option, the CVSROOT environment variable, or the cvs [checkout aborted]: CVS/Root file (if any). 

This is where my cvsroot is is located

echo $CVSROOT
/home/glu/cvsroot

Thanks 

chris.