Firefox showing errors

[Cutie Mark Surprise]

I'm getting errors in Firefox 3.0.5 error Console on the main menu and these are the errors: Warning: Error in parsing value for property 'filter'.  Declaration dropped.
Source File: http://www.avast.com/menu.css
Line: 17
Warning: Error in parsing value for property 'filter'.  Declaration dropped.
Source File: http://www.avast.com/menu.css
Line: 20
Warning: Expected color but found '#0'.  Error in parsing value for property 'background-color'.  Declaration dropped.
Source File: http://www.avast.com/language-menu.css
Line: 3
Warning: Error in parsing value for property 'filter'.  Declaration dropped.
Source File: http://www.avast.com/language-menu.css
Line: 17
Warning: Error in parsing value for property 'filter'.  Declaration dropped.
Source File: http://www.avast.com/language-menu.css
Line: 19
Warning: Expected end of value for property but found '*'.  Error in parsing value for property 'margin'.  Declaration dropped.
Source File: http://www.avast.com/asw_screen.css
Line: 492
Warning: Error in parsing value for property 'padding'.  Declaration dropped.
Source File: http://www.avast.com/asw_screen.css
Line: 598
Warning: Error in parsing value for property 'padding'.  Declaration dropped.
Source File: http://www.avast.com/asw_screen.css
Line: 603
Sorry if this isn't the place to post it. Is anyone else getting those kind of errors in Firefox 3.0.5? Just curious.

[DavidR]

Personally I don't go rummaging around in the error console and the main reason there isn't a huge amount we can do about these things. I only go digging if I'm getting hard errors, page doesn't display correctly or error messages are displayed to the screen.

They aren't actually classed as Errors but Warnings if you click on the Warnings section of the error console.

[Cutie Mark Surprise]

Thanks and I was curious.

[DavidR]

No problem, looking at stuff like this will frighten the horses (excuse the pun), this is the same reason I don't delve into the windows event viewer or avast log viewer, unless I'm experiencing a problem.