>>I find that no browser is perfect. I always have Opera, Firefox and IE open, each showing sites which I have found to work fine with that specific browser.
>
>I find out that FireFox works well on the web sides I visit regularly. The web sites that don't work usually are poorly designed in general.

Sergey and every one else know may know,

How did you make FF to work with Copy functionality on this site?

In MSDN and ASP.NET forums FF doesn't automatically make links to become autolinks as IE does.