Hello, ever since I upgraded to FireFox 3 and installed the compababilty Firefox version, it no longer automatically locates an error and displays info regarding it. Before if there was bad javascript code for example on the page, a big red X appeared and displayed an error message. It no longer does this so I wonder if there is an option I have to select to turn this feature on or what? Thanks.

Firebug works fine for me in FireFox 3. Are you using the 1.2 beta of Firebug? I don't think versions before 1.2 work in FF3 so that may be your issue.

Yes I am using version 1.2.0b7 of Firebug. Sometimes if the red X appears for an error it is only for half a second during the page load and disappears. The reason I ask about this is suddenly I noticed javascript popup error messages for fields no longer work but had worked the whole time so I am trying to figure out what the problem is.

Do you have the "Console" and "Script" panels enabled? You need to enable them for each site you want to use Firebug on.

firebug works fine for me too. all u have to do is enable it or maybe look in the options and see what are the errors that it is set to show

Firebug is a must have for any javascript developers :) Recently I learned about Yslow in a convention. If you are serious about your website performance, that's a very nice add-on to firebug :)

It's been working fine for me... I just noticed that there was a patch today...

Works great here. It has to be enabled for the page to show errors, etc.