Feedreader 3

Unfortunable unable to recreate the problem
Occurred 2 times out of 20 closing last too days

Case:
1) Closing Feedreader on window (X) button
2) Minimuze or CLose appliaction popsup
3) Clicking Close Application
4) Closing ... please wait progress bar starts
5) Aplpication Crashes

System Data:

Feedreader 3.0 Beta 4
Windows XP (update automaticly)

Windows Log of crash:
AppName: feedreader.exe AppVer: 0.0.0.0 ModName: kernel32.dll
ModVer: 5.1.2600.2180 Offset: 0001eb33