Bug#301966: kmail: crash when changing spell check language (probably race condition)

[EikeSauer@t-online.de]

Package: kmail
Version: 4:3.3.1-3
Severity: normal

I had a crash, and I could repeat it several times, but it did
not crash every time, so I can't give exact steps how to reproduce it.

What I did is the following: 
- replied to a mail
- chose extras -> spell checking
- changed the language while spell checking

I got a message box telling me that the change won't have 
an effect until the dialog box is restarted, and, on the 
same time, I sometimes got the dialog box spell checking 
with the new chosen language. 
- I pressed cancel on the spell checking box
- and ok (the only choice anyway) on the message box
Then kmail crashed.

The text in the mail probably has to have some words which
are wrong in the first and some words which are wrong in the
second language.

-- System Information:
Debian Release: 3.1
  APT prefers testing
  APT policy: (500, 'testing'), (50, 'unstable')
Architecture: i386 (i686)
Kernel: Linux 2.6.10-1-k7
Locale: LANG=de_DE@euro, LC_CTYPE=de_DE@euro (charmap=ISO-8859-15)

Versions of packages kmail depends on:
ii  kdelibs4                 4:3.3.2-4.0.2   KDE core libraries
ii  libc6                    2.3.2.ds1-20    GNU C Library: Shared libraries an
ii  libgcc1                  1:3.4.3-6       GCC support library
ii  libice6                  4.3.0.dfsg.1-10 Inter-Client Exchange library
ii  libkcal2                 4:3.3.1-3       KDE calendaring library
ii  libkdenetwork2           4:3.3.1-3       KDE Network library
ii  libkdepim1               4:3.3.1-3       KDE PIM library
ii  libkleopatra0a           4:3.3.1-3       KDE GnuPG interface libraries
ii  libkpimidentities1       4:3.3.1-3       KDE PIM user identity information 
ii  libksieve0               4:3.3.1-3       KDE mail/news message filtering li
ii  libmimelib1a             4:3.3.1-3       KDE mime library
ii  libpng12-0               1.2.8rel-1      PNG library - runtime
ii  libqt3c102-mt            3:3.3.3-8       Qt GUI Library (Threaded runtime v
ii  libsm6                   4.3.0.dfsg.1-10 X Window System Session Management
ii  libstdc++5               1:3.3.5-8       The GNU Standard C++ Library v3
ii  libx11-6                 4.3.0.dfsg.1-10 X Window System protocol client li
ii  libxext6                 4.3.0.dfsg.1-10 X Window System miscellaneous exte
ii  perl                     5.8.4-8         Larry Wall's Practical Extraction 
ii  xlibs                    4.3.0.dfsg.1-10 X Keyboard Extension (XKB) configu
ii  zlib1g                   1:1.2.2-3       compression library - runtime

-- no debconf information