Application slow to close after using deep scan

CPU: AMD64 Bulldozer v1 (6core)
Distro: funtoo
Kernel: 3.16.2-3
python2.7 --version Python 2.7.9
BleachBit version 1.4

After a scan/clean, I selected Menu->file->Quit
application seems to do nothing for almost a minute then finally shuts down.

Repeated above but started application on cmd line to get debug output.
Got following message when application finally terminated.
[code]
/usr/lib/python-exec/python2.7/bleachbit:45: Warning: Source ID 337 was not found when attempting to remove it gtk.main()
[/code]

If I repeat again, but not wait for the time out (click close box on window frame), I get the following:
[code]
Traceback (most recent call last):
  File "/usr/lib64/python2.7/site-packages/bleachbit/GUI.py", line 686, in <lambda>
    self.window.connect('destroy', lambda w: gtk.main_quit())
RuntimeError: called outside of a mainloop
/usr/lib/python-exec/python2.7/bleachbit:45: Warning: Source ID 353 was not found when attempting to remove it
  gtk.main()
[/code]

Something seems broken here.

edit...
selected activities:
Deep Scan {.DS_Store, Temporary Files, Thumbs.db}
Flash {All}
LibreOffice {All}
Links 2 {All}
System {Broken Desktop files, cache, clipboard, recent doc list, temp files}
Thumbnails {All}
VLC {All}