Crash on exit (PyQt, Qt, abnormal termination, quit, segfault, SIGSEGV)

On 4.0.9 (but this was also present in previous versions) if you normally close Electrum (both stand alone and installed version) on this OS you will get an abnormal crash.

OS: Windows 7 Ultimate 32 bit (updates to date) It’s quite easy to reproduce, just normally start electrum , leave it on for few minutes and then normally try to close it from the close button. It will immediately pop-up this (in 8/10 cases):

Here is the full dump:

roblem Event Name:	BEX
  Application Name:	electrum-4.0.9.exe
  Application Version:	0.0.0.0
  Application Timestamp:	00000000
  Fault Module Name:	StackHash_0a9e
  Fault Module Version:	0.0.0.0
  Fault Module Timestamp:	00000000
  Exception Offset:	1e175f42
  Exception Code:	c0000005
  Exception Data:	00000008
  OS Version:	6.1.7601.2.1.0.256.1
  Locale ID:	1033
  Additional Information 1:	0a9e
  Additional Information 2:	0a9e372d3b4ad19135b953a78882e789
  Additional Information 3:	0a9e
  Additional Information 4:	0a9e372d3b4ad19135b953a78882e789

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[SomberNight]

I’ve made some fixes in commits: https://github.com/spesmilo/electrum/commit/34e64ef152cc433722f460fdb203ce5135be9f6d https://github.com/spesmilo/electrum/commit/be43632cc47eb8cc35c2a39a21bc2089e5ce8ca1 https://github.com/spesmilo/electrum/commit/981381346f7dc095f6c0df4150ddc936c9d2884f

And now I can no longer reproduce the segfault 😃 I think it might either be fixed or have become extremely unlikely.

[ecdsa]

I still get them on linux too