Please describe the problem:
Depending on the "Type" of the application selected, the keyboard accelerator for the "Command" field may be different. 

Steps to reproduce:
1. Add a custom application launcher to the gnome panel.
2. Right click and bring up the properties diaglog.
3. Change the "type" of the launcher and observe the keyboard accelerator for the command field. It changes.


Actual results:
The keyboard accelerator for the command field changes.

Expected results:
It would not change.

Does this happen every time?
Yes.

Other information:
I've tested this in Ubuntu 8.04 with gnome-panel 2.22.2 and under Ubuntu 8.10 with gnome-panel 2.24.1. The problem exists on both. Note that the buttons at the bottom of the properties dialog have changed between 2.22.2 and 2.24.1 from "Help", "Revert", and "Close" to "Help", "Cancel", and "OK".