Every time I visit a page with a Java applet in it Firefox freezes and the CPU usage shoots up to 100%! I don’t know if this is a bug in Firefox or one of the many extensions I use. But it happens in all three of my computers.
Usually things get back to normal after the crash provided I do not visit the page with Java applet again. But recently Firefox’s CPU usage shoots up to 100% even after restarting from crash. I don’t want to disable Java altogether as the Formula One live timings from formula1.com is served by a Java applet.
I think I have to start with a fresh install of Firefox and find out who the culprit is. 
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#1 by Ed Burnette on March 13, 2006 - 1:20 PM
Which version of Java? Might make a difference.
#2 by scaamanho on March 13, 2006 - 2:16 PM
I think that is a Firefox problem, i happens in all my computers too. I don´t belive that a fresh instalation will resolve this lack, but if you get it, please post it.
#3 by Vasanth on March 13, 2006 - 4:50 PM
It is Java 6 beta at home though I also have Java 5 installed. At office it is only Java 5.
#4 by Gavin on March 13, 2006 - 7:55 PM
I see similar behaviour – but it depends on the applet. One page I visit regularly has two applets, by removing one (with Platypus and Greasemonkey) the page loads fine – including the other applet.
Strange.
#5 by Vasanth on March 13, 2006 - 8:05 PM
Gavin,
That’s an interesting comment.
Anyway I just need a single page with an applet to be shown. I do not care about others. So I think I will use IETab for that page and disable java in Firefox.
#6 by dion gillard on March 14, 2006 - 2:57 AM
Do you have AdBlock installed as an extension?
If you do, disable it and see if that’s the issue. It has been for lots of others I know.
#7 by Vasanth on March 14, 2006 - 8:10 AM
dion gillard,
Yes I have AdBlock Plus installed. Thanks for the tip. That saved me a lot time in figuring out ‘who the culprit is’. It indeed is AdBlock Plus. Hmmm…