interrupted release upgrade may confuse update-manager into believing an upgrade is not necessary

About halfway through getting new packages (1,017+ of 2,045), in an Distribution Upgrade (`sudo update-manager -d`) to 14.04, I lost my wireless access connection.
The net access had been flaky and I hold Ubiquity blameless in the dropped connection.

The issue was I was unable to get Ubiquity to continue on. About this system still showned 13.10 and `update-manager -d` stated there where no updates. I kinda expected a restart to pick up the ball but it didnot, nor did a full power restart.

I am not in any position to be able to recreate the issue, though I believe that just pulling the network connection while the system is fetching files will manifest what happened to me.

I had been logging the progress of the file being fetched prior to losing the connection. My last manual entry was recording that Ubiquity was "Fetching file 1,083 of 2,045 at a blazing 217 kB/s "

- - - - - - - - - - - - - -

Trusty Tahr (14.04 LTS)
- Getting new Packages
 - Fetching file \

0849 - 25 at 57.8 kB/s - of 2,045
0912 - 343 at 54.7
0946 - 694 at 66.4 kB/s
1017 - 1083 at 217 kB/s
- - - - - - - - - - - - - -

Cheers,
Lantz

--
  Think Different! Think YottaHertz!
  Lantz Rowland <email address hidden>

ProblemType: BugDistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.2
ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
ApportVersion: 2.14.1-0ubuntu3
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Thu Apr 17 00:08:39 2014
InstallationDate: Installed on 2014-03-28 (19 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
PackageArchitecture: allSourcePackage: ubuntu-release-upgrader
Symptom: ubuntu-release-upgrader
UpgradeStatus: Upgraded to trusty on 2014-04-13 (3 days ago)