Thank you for your suggestions and pointers for debugging icedove. I did
sudo aptitude update
sudo aptitude install gdb icedove-dbg strace
The following NEW packages will be installed:
icedove-dbg libnss3{ab} libvpx1{a}
The following packages will be upgraded:
icedove{b}
1 packages upgraded, 3 newly installed, 0 to remove and 4 not upgraded.
Need to get 145 MB of archives. After unpacking 347 MB will be used.
The following packages have unmet dependencies:
icedove: Depends: libcairo2 (>= 1.10.2-2~) but 1.8.10-6 is installed.
Depends: libpixman-1-0 (>= 0.18.0) but 0.16.4-1 is installed.
Depends: libsqlite3-0 (>= 3.7.4) but 3.7.3-1 is installed.
libnss3: Conflicts: libnss3-1d (< 2:3.13.4-2) but 3.12.8-1+squeeze5 is
installed.
The following actions will resolve these dependencies:
Remove the following packages:
1) icedove
Keep the following packages at their current version:
2) icedove-dbg [Not Installed]
3) libnss3 [Not Installed]
Leave the following dependencies unresolved:
4) enigmail recommends icedove | iceape
Accept this solution? [Y/n/q/?]
The following packages will be REMOVED:
icedove{a}
0 packages upgraded, 0 newly installed, 1 to remove and 4 not upgraded.
Need to get 0 B of archives. After unpacking 41.7 MB will be freed.
Do you want to continue? [Y/n/?]
(Reading database ... 266950 files and directories currently installed.)
Removing icedove ...
Processing triggers for gnome-menus ...
Processing triggers for desktop-file-utils ...
Processing triggers for man-db ...
Processing triggers for menu ...
Processing triggers for hicolor-icon-theme ...
Current status: 4 updates [-1].
> sudo aptitude install gdb icedove-dbg strace
The following NEW packages will be installed:
icedove{ab} icedove-dbg libnss3{ab} libvpx1{a}
0 packages upgraded, 4 newly installed, 0 to remove and 4 not upgraded.
Need to get 145 MB of archives. After unpacking 389 MB will be used.
The following packages have unmet dependencies:
icedove: Depends: libcairo2 (>= 1.10.2-2~) but 1.8.10-6 is installed.
Depends: libpixman-1-0 (>= 0.18.0) but 0.16.4-1 is installed.
Depends: libsqlite3-0 (>= 3.7.4) but 3.7.3-1 is installed.
libnss3: Conflicts: libnss3-1d (< 2:3.13.4-2) but 3.12.8-1+squeeze5 is
installed.
The following actions will resolve these dependencies:
Keep the following packages at their current version:
1) icedove [Not Installed]
2) icedove-dbg [Not Installed]
3) libnss3 [Not Installed]
and now it seems that neither icedove nor icedove-dbg is installable.
Because I need to use email, I have downloaded Thunderbird 15.0.1 and it
seems to be working.
