Description of problem:
When opening GnuCash for a file that is in use by another user, the dialog does not use underline for the non-stock buttons.

Version-Release number of selected component (if applicable):
gnucash-2.2.9-2.fc12

How reproducible:
100%

Steps to Reproduce:
1.Make sure file has group read/write access and resides in a directory with group read/write access for a group both users are in
2.As user1, start gnucash and open the file
3.Do the same as user2
  
Actual results:
GnuCash could not obtain the lock for ....

That database may be in use by another user, in which case you should not open it. What would you like to do?

[_Open Anyway] [_Create New File] [Quit]

(the Q of Quit is underlined; nothing else is)

Expected results:
The O and C should be underlined, with no leading underscore character.