update-manager does not appear when updates available

[José Alburquerque]

Binary package hint: update-manager

Update manager does not come up when updates are available. I know there are updates when I run 'apt-get upgrade' and it shows the packages that will be upgraded. I've checked the 'Startup Applications' dialog and 'Update Notifier' is included (I've attached a window shot). Also it looks like update-notifier is running:

[01:38][jose@sweety: ~]$ ps ux | grep update
jose 11275 0.0 0.4 235132 16248 ? S 12:48 0:00 update-notifier --sm-config-prefix /update-notifier-9FCCA2/ --sm-client-id 109567845d7282791112444031727331500000097500015 --screen 0
jose 14840 0.0 0.0 7348 896 pts/0 S+ 13:41 0:00 grep update
[01:41][jose@sweety: ~]$

ProblemType: Bug
Architecture: amd64
Date: Wed Jun 10 13:38:33 2009
DistroRelease: Ubuntu 9.10
Package: update-manager 1:0.121
PackageArchitecture: all
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.30-8.9-generic
SourcePackage: update-manager
Uname: Linux 2.6.30-8-generic x86_64