upgrading problems

[Francesco Pietra <chiendarret@gmail.com>]

Hello:
When upgrading (after update) amd64 wheezy, at the message:

Update mozilla/certdata.txt to latest NSS branch version 1.64.2.13
Added + Removed -

descending the list, until "END" appears, I am unable to let upgrading going on.

I tried various keys, first of all "Tab" without success. Only
"Ctrl-C" let "END" disappear, however without any of the various
packages being upgraded.

I did not notice a similar affair with i386. With both the latter and
amd64, iceweasel.

thanks for advice

francesco pietra