[fixed in 1.1.7 @r5098] deluged crashed with KeyError in on_alert_tracker_error()

Binary package hint: deluge

jaunty 2.6.28.11
deluge 1.1.5
closing the program resulted in a crash

ProblemType: Crash
Architecture: i386
DistroRelease: Ubuntu 9.04
ExecutablePath: /usr/bin/deluged
InterpreterPath: /usr/bin/python2.6
NonfreeKernelModules: nvidia
Package: deluge-core 1.1.5+dfsg-1ubuntu1
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/bin/deluged --port=58846 --config=/home/username/.config/deluge
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_HK.UTF-8
 SHELL=/bin/bash
PythonArgs: ['/usr/bin/deluged', '--port=58846', '--config=/home/username/.config/deluge']
SourcePackage: deluge
Title: deluged crashed with KeyError in on_alert_tracker_error()
Traceback:
 Traceback (most recent call last):
   File "/var/lib/python-support/python2.6/deluge/core/torrentmanager.py", line 722, in on_alert_tracker_error
     torrent = self.torrents[str(alert.handle.info_hash())]
 KeyError: 'cdb9aaaa1a4966f12c277516ae0d715021b647e9'
Uname: Linux 2.6.28-11-generic i686
UserGroups: adm admin audio cdrom dialout dip floppy fuse lpadmin netdev plugdev video