icons don't show up in tray area

[reggler]

I could believe the application tzdata needs to be (re)installed...

Thanks Teunis,

I did a

sudo apt-get install --reinstall tzdata

followed by

$ sudo dpkg-reconfigure tzdata

Current default time zone: 'America/Vancouver'
Local time is now:      Sat Aug 31 09:16:57 PDT 2013.
Universal Time is now:  Sat Aug 31 16:16:57 UTC 2013.

but looks still the same in my clock's timezone dialog...

[Teunis]

And also in the time zone section of System Settings?
Do you have a set of tzdata.* files in /var/lib/dpkg/info?

The file tzdata.list gives some more information about where the missing list should be.

And do you see this list in /usr/share/zoneinfo?
On my sytem it's 69 items.