Version:           0.7 (KDE4) (using KDE 4.4.2) 
OS:                Linux

It's very difficult for me to use the knetworkmanager popup (the little menu that appears when I click on the applet in the taskbar, with the list of configured networks, "connect to another network", "activate wireless" and "handle connection") because it tends to disappears before I can get the mouse pointer on it.

From my understanding, a combination of three things causes this bug:

1) After clicking on the icon, the menu disappears as soon as a window gains focus
2) The Focus follow mouse option
3) There's a two pixel gap between the pop up and the taskbar.

Number 1 is IMHO not desirable.

So (assuming there's a window in that part of the screen, e.g. a maximised window) if the mouse touches this two pixel gap, the pop up closes before the mouse enters it. I got used to moving the mouse very fast from the applet to the menu to avoid this problem but then I tend to move the pointer too far, to the point it exits the pop up, it closes and I have to start over.

Reproducible: Always

Steps to Reproduce:
0) Activate focus follows mouse
1) Have a maximised window
2) Click on the knetworkmanager applet (the menu pops up)
3) Move the mouse pointer slowly towards the menu.

Actual Results:  
Just after the pointer leaves the taskbar and before it enters the menu, the menu closes.

Expected Results:  
The menu should remain open until I close it, or until I select an option (see the kmix applet for comparison).

(An acceptable intermediate solution would be to require a window to be selected for a second or half a second before the menu disappears, giving plenty of time to cross those two pixels)