Version:           3.2.3 (using KDE KDE 3.4.3)
Installed from:    Compiled From Sources
Compiler:          gcc 3.2.3 
OS:                Linux

It seems that after debug sessions the konsole process still hangs around even though the debugging is done. This happens even if the debugging session is terminated as the result of the program successfully exiting.

pstree output before debug session in brand new kdevelop session

 |-kdevelop(27575)---kdevelop(27577)---kdevelop(27578)

pstree output after debug session has terminated

 |-kdevelop(27575)-+-kdevelop(27577)---kdevelop(27578)
 |                 `-konsole(27671)

Notice the konsole process still being listed.

[goa:src]$ ps l -p 27671
  F   UID   PID  PPID PRI  NI   VSZ  RSS WCHAN  STAT TTY        TIME COMMAND
504 50028 27671 27575   9   0     0    0 do_exi Z    ?          0:00 [konsole <defunct>]