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Old 11-11-2008, 02:09 AM   #1
Registered: Aug 2006
Location: /hawaii/honolulu/downtown
Distribution: Fedora 10[Cambridge] and Ubuntu 9.04[Jaunty]
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Question Firefox 3.0.2 not starting up, Error[Couldn't load XPCOM]

hi all. till yesterday evening everything was fine including firefox. today in the morning when i started firefox it dint come up then i tried running it from command line and got the following error message
Couldn't load XPCOM.
after googling for some time got some links in some other forums[surprisingly i dint get any @LQ, seems nobody faced similar prob?]

but i'm afraid , even after doing what is mentioned there, firefox is stil down and it gives me the same error, has anyone come accross similar issues with firefox , BTW i'm using fedora 2.6.26 and firefox 3.0.2. please help me out as i use firefox most of the time, currently i'm trying to somehow manage with opera . thank you very much.
Old 11-11-2008, 07:09 AM   #2
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Here is a place to start..
Old 11-13-2008, 03:04 AM   #3
Registered: Aug 2006
Location: /hawaii/honolulu/downtown
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Originally Posted by farslayer View Post
Thanks for providing this link. I went thru that and finally the section "Linux specific hints" and tried to do what's been asked there. Did run the first part to make sure that there are no "not found" dependencies. BTW i checked this for I got the following list and didnot get any "not found" types,
[home@harrys]./ `which ldd` -r /usr/lib/xulrunner-1.9/ =>  (0x00110000) => /lib/ (0x0067b000) => /lib/ (0x00649000) => /lib/ (0x00674000) => /lib/ (0x04078000) => /lib/ (0x0407d000) => /lib/ (0x04084000) => /lib/ (0x004de000)
        /lib/ (0x004be000)
could not figure out properly what they are trying to make us do @the_mozilla_page you mentioned, can you please help me what to check next? or what is the next step? Thank you very much.
Old 11-13-2008, 09:58 PM   #4
Registered: Feb 2005
Location: Lakeland, Florida
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Firefox Fix, Maybe

I downloaded the latest FF build, 3.0.4 from instructions on the site below. Maybe trying the same method with FF 3.x might help solve the problem. Might have to completely uninstall the current version you have.

Good luck, MIchael
Old 11-16-2008, 10:57 PM   #5
Registered: Aug 2006
Location: /hawaii/honolulu/downtown
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my special thanks to all you guys! all of you helped me a lot.
i updated my system and voila FF is working fine, BTW still i dont know whatz the issue,
@mogrady, thank you, i went thru that tutorial , a nice step by step explanation of installing FF.Thank you.
Old 02-28-2009, 04:52 PM   #6
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Thumbs up solution for update fedora 10

I have same problem after update fedora 9 to fedora 10.

The solution was:

# yum search mozilla
xulrunner.i386 : XUL Runtime for Gecko Applications
xulrunner.x86_64 : XUL Runtime for Gecko Applications
xulrunner-devel.i386 : Development files for Gecko

# yum install xulrunner.x86_64

Old 04-06-2011, 02:49 PM   #7
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I know that this post is more than 6 months old, but "Couldn't load XPCOM" error have made me crazy! I have found the solution and I want to share with you. The error was in the LD_LIBRARY_PATH environment variable. It lacks the path to /usr/lib. Add this path to the variable and everything should work.

I have found the solution on this site

Hope this will help someone else


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