How to upgrade icecat to newest version

[user1]

On Fri, 08 Apr 2011 17:37:09 -0300, Lucio M Nicolosi wrote:

> On Fri, Apr 8, 2011 at 5:00 PM, user1 <bqz69 at telia.com> wrote:
>> I am using 10.10 and icecat 3.6.15
>>
>> Then I did a software update
>>
>> After that my icecat freezes constantly.
>>
>> How do I update icecat so it is compatible with the latest software
>> update?  :-)
> 
> 
> Are you using the Icecat PPA?

I have inserted this one in /etc/apt/sources.list:

deb http://ppa.launchpad.net/gnuzilla-team/ppa/ubuntu natty main

Then when I try to upgrade icecat using synaptic I get:

icecat:
 Depends: libasound2 (> 1.0.24.1)
  Depends: libjpeg62 (>=6b1) but 6b-16.1 is to be installed

?