If you are running Sid and have been having troubles with Konqueror, Mozilla or Galeon after the last apt-get upgrade (approx Sept 24-25) then you may need to downgrade your libc6 to 2.2.4-1. I have links to the files that fixed all three of these apps on my Sid system.

The problems exhibited by my system were as follows:

Mozilla could not install due to failed dependencies in the mozilla-browser package. It segfaulted at regxpcom.

Konqueror crashed when viewing a web page (except for the debian page ;)

Galeon segfaults on opening.

Package	Size (bytes)	Offical Package Page
glibc-doc_2.2.4-1_all.deb	2,559,762	http://packages.debian.org/testing/doc/glibc-doc.html
libc6-dev_2.2.4-1_i386.deb	2,319,658	http://packages.debian.org/testing/devel/libc6-dev.html
libc6_2.2.4-1_i386.deb	3,417,022	http://packages.debian.org/testing/base/libc6.html
locales_2.2.4-1_all.deb	3,326,656	http://packages.debian.org/testing/base/locales.html

It has been brought to my attention that you may only need to downgrade to the libc6_2.2.4-1_i386.deb package.
Also, for anybody who doesn't know, you downgrade a packge as follows:
# dpkg --force-downgrade -i <filename>

Bug reports have been filed and you can check their status at http://bugs.debian.org/cgi-bin/pkgreport.cgi?pkg=libc6

Questions, comments or flames to fool@atomichamster.com, or I am usually in the #debian channel on irc.openprojects.net as Shango.

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