Description of problem:
Qucs shows up 4 times in KDE menu.
from qucs's desktop file : 
Categories=Application;Education;Utility;X-Fedora;

Remove "Application;Education;Utility;" so that octave complies with the same 
category as that of other engineering applications.
Add: Science;Engineering instead.

Version-Release number of selected component (if applicable):
qucs-0.0.12-2.fc7


Steps to Reproduce:
1. Install qucs.
2. Start KDE.
3. run kbuildsycoca --menutest | grep qucs to get the 4 entries printed to the 
terminal.


Actual results:
4 menu entries:
chitlesh(SPECS)[0]$kbuildsycoca --menutest | grep qucs
kbuildsycoca running...
Reusing existing ksycoca
Edutainment/Miscellaneous/      
fedora-qucs.desktop     /usr/share/applications/fedora-qucs.desktop
Utilities/More Applications/    
fedora-qucs.desktop     /usr/share/applications/fedora-qucs.desktop
Administration/Utilities/More/  
fedora-qucs.desktop     /usr/share/applications/fedora-qucs.desktop
Administration/Server Settings/Utilities/More/  
fedora-qucs.desktop     /usr/share/applications/fedora-qucs.desktop

Expected results:
One menu entry on KDE menu and at "Science & Math"

Additional info:

Please fix this on rawhide as soon as possible.