So what the heck does that all mean?
Basically, there is an exception error on like 1440 of the local Firefox javascript file “FeedProcessor.js”.

The line in question is as follows:
channel.contentType = “application/vnd.mozilla.maybe.feed”;
The whole section of code reads as follows:
// nsIStreamListener

// The XMLReader will throw sensible exceptions if these get called
// out of order.
onStartRequest: function FP_onStartRequest(request, context) {
// this will throw if the request is not a channel, but so will nsParser.
var channel = request.QueryInterface(Ci.nsIChannel);
channel.contentType = “application/vnd.mozilla.maybe.feed”;
this._reader.onStartRequest(request, context);
},

How to fix this:
This is mearly a short-lived problem thrown by Firefox and can be corrected by clicking “Clear” in firebug and refreshing the current page.
You could always just restart Firefox to correct this as well if you would prefer that route.

This error could have been caused by:
AdBlock Plus
Firefox loading invalid RSS feeds

What the heck is that?

So you’ve just visited a website using Mozilla Firefox and this message has popped up telling you that the site looks suspicious.

Usually the site has been marked as a possible virus containing website and Firefox will show you this message attempting to protect itself against Malware, Spyware or other forms of Viruses.

There are occasions when this is mearly a warning and not to be taken as concrete evidence of viruses or impending browser/computer doom!

Most of the time when faced with a message like this you will want to click “Get me out of here”, or you could ofcourse click “Why was this site blocked?” and read a little more information regarding this individual report. I often type the domain name into a search engine – i.e. Google – followed with “review” trailing the name to see if the site is valid or if it’s just something that’s been made to cause trouble.