you want it off it its a security risk (it disables some variables)
I have it on and turned it off. doing samething .
I even tried
<IfModule mod_security.c>
# Turn off mod_security filtering.
SecFilterEngine Off
# The below probably isn't needed,
# but better safe than sorry.
SecFilterScanPOST Off
</IfModule>
in teh .htaccess files
oh well must be something else...