Closing windows left application running in process list

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Run puttycyg
2. Start some application. Example. nano or irssi.
3. close window with pressing X in top right corner.
4. Check process list with task manager and you still see your program in list.

What is the expected result?  What happens instead?
Losing windows closes also program.

PutTTYcyg version: puttycyg 20091228
Cygwin version:
base-cygwin             2.1-1
Cygwin DLL version info:        DLL version: 1.7.5
Windows version: Windows 7 Home Premium Ver 6.1 Build 7600 (AMD64)

Do you have any firewall software installed?
Yes. AVG free version

Original issue reported on code.google.com by tommi.lu...@gmail.com on 15 Aug 2010 at 9:29

[GoogleCodeExporter]

I have the exact same issue.

Further, both conhost.exe and cthelper.exe are left running, in addition to the 
child process passed to puttyCyg (in my case, Irssi.)

Reproduced with:
PuTTYCyg 20101029
Windows 7 Ultimate 64 bit, Version 6.1.7601
Cygwin1.dll v1.7.7

Original comment by j...@dfwe.net on 3 Apr 2011 at 5:22

[GoogleCodeExporter]

I've just discovered this same behavior.  I was seeing a lot of conhost.exe in 
the task manager.  After doing an hour's research I figured out they were being 
left by X(ing) out of putty.  If I issue an “exit” to close the window 
everything gets cleaned up properly.

I also discovered that if you X(out) and then login and find the old bash 
session and kill -9 that session it will destroy the conhost task.  You can not 
kill -9 the conhost task directly.  Not sure if this is a putty or cygwin 
issue.  I too am running windows 7.

Original comment by john.eas...@gmail.com on 23 Aug 2011 at 8:29