Works fine in Fx4.0.1. You might have an extension that is not updated to go with Fx7. You could try Starting in Safe Mode -

Hold down the Shift Key as you double click on the Firefox Icon. If it works better you should work through -

https://support.mozilla.com/en-US/kb/Troubleshooting%20extensions%20and%20themes

Why are you running so far ahead of the public release? Users of anything over Fx5 should be able to do their own trouble shooting. Add-ons(Extensions, Themes and Plug-ins like Flash) and third party toolbars are often not up-dated to that extent and need disabling.

I have no problem with opening pages or articles from hyperlinks on that page with Firefox 7.0.a1.

For help with the Nightly builds that are in the Alpha stage, you would be better off posting in the MozillaZine Builds forum - http://forums.mozillazine.org/viewforum.php?f=23 - where most of the people using builds like that hang out.

@alan_r: Thank you very much for your post. However, also in the safe mode, FX doesn't work in that page, so I suppose it can be a personal, relatively to my PC, problem. I don't understand your question! Can't I use the Nightly build without being a guru? If it was so, Mozilla wouldn't publicly release the nightly builds!

@the-edmeister, alan_r: Thank you!

I appreciate your generous thanks even though you still have the problem. Nightly builds are generally for testing(alpha stage as the-edmeister says) and, almost by definition, can be unstable.

The links seem to work if you middle-click them to open the link in a new tab or use the right-click context menu. Only a left click doesn't have any effect for me with some links. It can be caused because that part of the page is created via JavaScript.

giuseppe.attilio21 wrote: Can't I use the Nightly build without being a guru? If it was so, Mozilla wouldn't publicly release the nightly builds!

Mozilla does not bring any public attention to the Nightly builds as they are not meant for the average Firefox users as they are meant for devs and testers and those that understand at least the basics of separate folder installs and separate Profiles for each.

At most they only bring public attention to the Beta builds (currently 5.0b5) and Aurora (currently 6.0a2) for those who want to test. http://www.mozilla.com/en-US/firefox/channel/

The Nightly builds do have to be on the ftp.mozilla.org at least though so that the devs and testers can download and test them.

Just where did you get the Nightly 7.0a1 build? as some sites like fileforum.betanews.com have gotten way out of hand with themselves in thinking they are linking to builds that are safe for average Firefox users to use whether it be 7.0a1 or 6.0a2. Part of the problem is that up til development of Firefox 4.0, the unstable Trunk Nightly builds (used to be called Minefield) and Branch nightly builds were built under their codenames (Namoroka for Fx 3.6 for example).

@cor-el: OK, my problems are the same of yours. I found your comment very useful to me. Thank you!

@James: Yes, I know that. I just wanted to highlight my problem with this version and find someone who could solve my problem. I am aware of its possible problems and I'm not protesting for that. However I think that also average users, aware of the risks of the nightly builds, can contribute to improve them. I have downloaded it from nightly.mozilla.org.