Trying to update to iceweasel 4.0b8

[shirish शिरीष]

Hi all,
     I am on Debian Squeeze.  I am trying to update to iceweasel 4.0b8
and added both the repos. as given in
http://mozilla.debian.net/packages/HEADER.html

Now I know that in Debian Squeeze 3.6 is the version which works. Does
anybody know of a way so that both 3.6 as well as 4.0b8 live happily
together ? I tried upgrading the other way and it was breaking too
many packages.

Just to show :-

$ sudo aptitude -t experimental install iceweasel
The following packages will be upgraded:
  iceweasel libmozjs4d libnss3-1d{b} xulrunner-2.0{b}
4 packages upgraded, 0 newly installed, 0 to remove and 366 not upgraded.
Need to get 14.5 MB of archives. After unpacking 984 kB will be used.
The following packages have unmet dependencies:
  xulrunner-2.0: Depends: libsqlite3-0 (>= 3.7.4) but 3.7.3-1 is installed.
  libnss3-1d: Depends: libsqlite3-0 (>= 3.7.4) but 3.7.3-1 is installed.
The following actions will resolve these dependencies:

      Remove the following packages:
1)      ca-certificates-java
2)      chromium-browser
3)      chromium-browser-inspector
4)      chromium-codecs-ffmpeg-extra
5)      default-jre
6)      default-jre-headless
7)      deskbar-applet
8)      ekiga
9)      empathy
10)     epiphany-browser
11)     epiphany-extensions
12)     evolution
13)     evolution-data-server
14)     evolution-exchange
15)     evolution-plugins
16)     gnome
17)     gnome-accessibility
18)     gnome-applets
19)     gnome-control-center
20)     gnome-core
21)     gnome-desktop-environment
22)     gnome-office
23)     gnome-panel
24)     gnome-session
25)     hamster-applet
26)     icedtea-6-jre-cacao
27)     iceweasel
28)     libaccess-bridge-java
29)     libaccess-bridge-java-jni
30)     libcamel1.2-14
31)     libebook1.2-9
32)     libedata-book1.2-2
33)     libedataserverui1.2-8
34)     libevolution
35)     libnss3-1d
36)     libpurple-bin
37)     libpurple0
38)     librpm1
39)     librpmio1
40)     mozilla-livehttpheaders
41)     openjdk-6-jre
42)     openjdk-6-jre-headless
43)     openjdk-6-jre-lib
44)     openoffice.org
45)     openoffice.org-base
46)     openoffice.org-base-core
47)     openoffice.org-calc
48)     openoffice.org-common
49)     openoffice.org-core
50)     openoffice.org-draw
51)     openoffice.org-emailmerge
52)     openoffice.org-evolution
53)     openoffice.org-filter-binfilter
54)     openoffice.org-filter-mobiledev
55)     openoffice.org-gcj
56)     openoffice.org-gnome
57)     openoffice.org-gtk
58)     openoffice.org-help-en-us
59)     openoffice.org-impress
60)     openoffice.org-java-common
61)     openoffice.org-math
62)     openoffice.org-officebean
63)     openoffice.org-report-builder-bin
64)     openoffice.org-style-galaxy
65)     openoffice.org-style-tango
66)     openoffice.org-thesaurus-en-us
67)     openoffice.org-writer
68)     pidgin

and so on and so forth, so is there a way ?

-- 
          Regards,
          Shirish Agarwal  शिरीष अग्रवाल
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