plugin: task reaper automatic timer hangs gtg on quit

and yet, the process is not killed:
$ ps -ef | grep gtg
ap 11670 32382 0 13:55 pts/7 00:00:00 grep --color=auto gtg
ap 31975 22648 0 13:36 pts/6 00:00:01 /usr/bin/python /usr/bin/gtg
$ kill 31975
$ ps -ef | grep gtg
ap 11912 32382 0 13:55 pts/7 00:00:00 grep --color=auto gtg
ap 31975 22648 0 13:36 pts/6 00:00:01 /usr/bin/python /usr/bin/gtg

Since you use ubuntu could you create a temporary guest user (from the same menu from which you shut down your computer) and run gtg with the -d switch ("gtg -d"), posting here the output?

result under clean user:
2010-05-07 20:07:34,797 - DEBUG - gtg:main:105 - Debug output enabled.
2010-05-07 20:07:35,585 - DEBUG - browser:on_task_added:1811 - Add task with ID: 0@1
2010-05-07 20:07:35,586 - DEBUG - browser:on_task_modified:1828 - Modify task with ID: 0@1
2010-05-07 20:07:35,587 - DEBUG - browser:on_task_modified:1828 - Modify task with ID: 1@1
2010-05-07 20:07:35,587 - DEBUG - browser:on_task_modified:1828 - Modify task with ID: 2@1
2010-05-07 20:07:35,587 - DEBUG - browser:on_task_modified:1828 - Modify task with ID: 3@1
2010-05-07 20:07:35,587 - DEBUG - browser:on_task_modified:1828 - Modify task with ID: 4@1
2010-05-07 20:07:35,588 - DEBUG - browser:on_task_modified:1828 - Modify task with ID: 5@1
2010-05-07 20:07:35,588 - DEBUG - browser:on_task_modified:1828 - Modify task with ID: 6@1
2010-05-07 20:07:35,588 - DEBUG - browser:on_task_added:1811 - Add task with ID: 6@1
2010-05-07 20:07:35,589 - DEBUG - browser:on_task_modified:1828 - Modify task with ID: 6@1
2010-05-07 20:07:35,591 - DEBUG - browser:on_task_modified:1828 - Modify task with ID: 0@1
2010-05-07 20:07:35,592 - DEBUG - browser:on_task_added:1811 - Add task with ID: 5@1
2010-05-07 20:07:35,605 - DEBUG - browser:on_task_modified:1828 - Modify task with ID: 5@1
2010-05-07 20:07:35,607 - DEBUG - browser:on_task_modified:1828 - Modify task with ID: 0@1
2010-05-07 20:07:35,608 - DEBUG - browser:on_task_added:1811 - Add task with ID: 4@1
2010-05-07 20:07:35,609 - DEBUG - browser:on_task_modified:1828 - Modify task with ID: 4@1
2010-05-07 20:07:35,613 - DEBUG - browser:on_task_modified:1828 - Modify task with ID: 0@1
2010-05-07 20:07:35,615 - DEBUG - browser:on_task_added:1811 - Add task with ID: 3@1
2010-05-07 20:07:35,616 - DEBUG - browser:on_task_modified:1828 - Modify task with ID: 3@1
2010-05-07 20:07:35,617 - DEBUG - browser:on_task_modified:1828 - Modify task with ID: 0@1
2010-05-07 20:07:35,620 - DEBUG - browser:on_task_added:1811 - Add task with ID: 2@1
2010-05-07 20:07:35,621 - DEBUG - browser:on_task_modified:1828 - Modify task with ID: 2@1
2010-05-07 20:07:35,622 - DEBUG - browser:on_task_modified:1828 - Modify task with ID: 0@1
2010-05-07 20:07:35,625 - DEBUG - browser:on_task_added:1811 - Add task with ID: 1@1
2010-05-07 20:07:35,626 - DEBUG - browser:on_task_modified:1828 - Modify task with ID: 1@1
2010-05-07 20:07:35,628 - DEBUG - browser:on_task_modified:1828 - Modify task with ID: 0@1
2010-05-07 20:07:35,650 - DEBUG - browser:general_refresh:1865 - Trigger refresh on taskbrowser.

after the restart with the working user, the program correctly loaded with the launch of the operating system, which means that when you reinstall the program, not all settings have been removed, although I re-installed as follows:
sudo aptitude purge gtg
rm -rfv ~/.local/share/gtg/
sudo aptitude install -y gtg

now application correctly starts, but quit only as:
kill -9 <pid gtg>

Settings are in .local/share/gtg , .config/gtg, and some plugins use .cache/gtg (which are standard directories, following the Freedesktop specifications).
It would be interesting to understand what caused that problem.

About the qutting problem, just to be clear, are you saying that selecting the Quit in the menu does not do anything (or ctrl+Q)?
Could you try to run

chmod -R u+rwx ~/.{local/share,config,cache}/gtg

and try running gtg again, to exclude it's a file permission problem?

I isolated this problem:
1. $ rm -rfv ~/.{local/share,config,cache}/gtg
2. $ sudo aptitude purge gtg
3. $ sudo aptitude install gtg
then the application starts and ends correctly.

Initial state: only the plugin "Closed tasks removed" is enabled with default settings.
step:
1. start gtg
2. menu "edit -> parameters"
3. tab "plugins"
4. select the plugin "Closed tasks removed"
5. click the button "Configure plugin"
6. set the flag "Delete tasks automatically"
7. click "ok"
8. close the dialog "parameters"
9. exit the application
result: gtg hangs.

if unset the flag "Delete tasks automatically", gtg correctly ends again.

Thanks for isolating this bug! I believe it's caused by a timer that doesn't close nicely when the quitting signal is received. I'll look into this.

I think I solved this one. The fix should be available in the daily PPA (https://edge.launchpad.net/~invernizzi/+archive/gtg-daily) in half an hour.

Please confirm that everything works fine now :)