- Q
Firefox says in JS debug "xslHttp.responseXML is null" on vnstat.js:154:7 It looks like it can't request the sidebar.xsl but it works manually.
- A
The 'XSL' file type must be added to the server's MIME support list.
For SuSE Linux, edit
/etc/mime.types, add the line like 'text/xml xml xsl'