[Lucid] gnome panel: incorrect drawing of "indicator applet" and "show desktop button" at start up

[pink elephants on parade]

Binary package hint: gnome-panel

Sometimes, at start up, ubuntu draws incorrectly the "show desktop button" and the "indicator applet" in the gnome panels.
"Show desktop button" may be accompanied by a small white or violet line on his rigth side (it seems that the violet line is a reduced reproduction of the button). This problem may be automatically solved opening some random windows, maximizing then minimizing them: the desktop button is usually re-drawn correctly.
"Indicator applet" shows duplicated indicators (tipically, bluetooth and sound ones) - only one of each actually working - while doesn't show the other indicators (network manager & chat/mail/broadcast manager). I could solve this problem only restarting gnome by '/etc/init.d/gdm restart'.

I'm running ubuntu 10.04 with visual effects on 'Extra' and with the nvidia proprietary driver activated (ubuntu recommended version)

Sorry for my bad English. I'm Italian. I hope you can understand the report.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: gnome-panel 1:2.30.0-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.32-22.33-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-22-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
Date: Mon May 10 19:06:41 2010
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429)
ProcEnviron:
 LANG=en_US.utf8
 SHELL=/bin/bash
SourcePackage: gnome-panel

[Michael Nagel (nailor)]

i would suggest you attach a screenshot for clarity.
please look at the screenshot i attached and say if you have the same problem.

[pink elephants on parade (morisakihelmut)]

I don't know...our desktop seems quite different, i can't compare them.
I attach two screenshot showing my problems.
Please note the problems occur apparently randomly.

[pink elephants on parade (morisakihelmut)]

another screenshot of the bug