Hi!
I have downloaded Firefox 3 Beta 2 on my Slackware 11 system, but now when I try to run it using /usr/local/firefox/firefox, I get the following error message -
It appears to me that libnss3 needs to be upgraded. My question is, if I upgrade this library, will it have any adverse side effects on my Slackware install. Secondly, I have searched for this library on linuxpackages, but I couldn't find it. Any idea, where it is available?

libnss3.so is in the same directory where you extracted firefox-3b2, so I suggest you to run firefox from that directory, so it can find the necessary libraries. Note that you must run
not ./firefox-bin
I've also tested it and it seems that it doesn't work very well with sites that use javascript and such, so it's better to wait until the final release is out.

Regards

Doesn't work. I tried ./firefox from the /usr/local/firefox directory and got a crash report box which doesn't seem to be doing anything as when I press Restart Firefox button on it, I get the same box over again.

It seems that the firefox binary is trying to use /usr/lib/libxul.so, which is most likely from a different version of FF and not the one included in this beta. You can try to rename /usr/lib/libxul.so, run ldconfig (both as root) and then run ./firefox

Hm... i just download FF3b2 and it just worked
i extract the package into /opt/firefox3 and i ran it from my ordinary user and it just worked without any error

I installed FF 3b a while ago, using this Slackbuild script: http://repository.slacky.eu/slackwar....11/en-us/src/
(after modifying it a bit).
And then made symlinks to /usr/lib/firefox/plugins.
Runs OK.

I extracted the official package in my usual /usr/local dir; think that the previous version was in the /usr/local/firefox directory ... had some errors to do with libxul.so (I think, that's probably wrong).

Just did "rm -rf /usr/local/firefox" [careful!] and then re-extracted. Works fine now.

My impresssion is that it's slower than FF2 for me (1G Athlon, 768MB RAM, Slack 12.0) and still has some major problems - like eating 90% CPU for 5 minutes after closing. Currently at 40% CPU and 10% RAM, have 2 tabs open and have been using it for about 10 minutes.

My history hasn't carried over so all autocomplete entries have gone. User/Pass entry is a little weird, appears to have the passwords but not prefilled until I enter the username and <tab>. I prefer the way it now handles "invalid" certificates though, very slick. Very few plugins now work. Lastly, the general appearance seems tighter possibly better font display too.

Worst thing ... no adblock! Teh internet suckorz!!1111

When you use a new FF-version, it's best if you also create a new profile.
All the things you mention are not normal. FF 3.* is faster (especially the start up). A high CPU-usage also indicates a corrupted profile (or extension-conflicts).

No AdBlock?
No problem (AdBlock is known for it's profile corruptions anyway...), use no-ads.pac and you'll have about he same result. If that's not enough, install FlashBlock, to get rid of all annoying flash-ads.

Adblock works in the beta, I have it running now

You can always get extensions to work in FF (or TB). Open the .xpi file, in the install.rdf file, upgrade the FF maxVersion, zip it up again and install.

Note: this can damage your browser/emailclient's profile!

I somehow managed to get it working by sym linking libnss3.so and a few other files to /usr/lib/. But every time I reboot, I have to do it all over again.

Actually, I had untarred the firefox 3 beta 2 package directly into the already existing /usr/local/firefox directory. So after realising this, I removed the folder and again untarred the firefox package in the same folder.
Now firefox is working fine.

Did that give you a clue or did you not bother to read the responses?