Version:           Kmail 1.9.6 (using KDE KDE 3.5.6)
Installed from:    Ubuntu Packages
OS:                Linux

My kmail binary is from Ubuntu, KDE version 3.5.6.
A message with the following header lines causes kmail to crash :

Content-type: text/plain; charset=
Content-transfer-encoding: 8bit

Note, the charset specification is empty.

Here is a part of traceback, maybe useless without debug information.
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
[KCrash handler]
#6  0xb7dce9f0 in KMFolderMbox::createIndexFromContents ()
   from /usr/lib/libkmailprivate.so
#7  0xb7dc8da1 in KMFolderMbox::open () from /usr/lib/libkmailprivate.so
#8  0xb7d2e232 in KMFolderIndex::fillMessageDict ()
   from /usr/lib/libkmailprivate.so
#9  0xb7dcd65e in FolderStorage::invalidateFolder ()
   from /usr/lib/libkmailprivate.so
#10 0xb7dcf805 in FolderStorage::readFolderIdsFile ()
   from /usr/lib/libkmailprivate.so
#11 0xb7dcf831 in FolderStorage::registerWithMessageDict ()
   from /usr/lib/libkmailprivate.so
#12 0xb7dd28bb in KMFolder::KMFolder () from /usr/lib/libkmailprivate.so
#13 0xb7dd47f1 in KMFolderDir::reload () from /usr/lib/libkmailprivate.so
#14 0xb7dd4af5 in KMFolderMgr::setBasePath () from /usr/lib/libkmailprivate.so
#15 0xb7dd4ddf in KMFolderMgr::KMFolderMgr () from /usr/lib/libkmailprivate.so
#16 0xb7e25fea in KMKernel::init () from /usr/lib/libkmailprivate.so
#17 0x0804a091 in ?? ()
#18 0xbf99b97c in ?? ()
#19 0x00000000 in ?? ()


#6  0xb7dce9f0 in KMFolderMbox::createIndexFromContents ()
   from /usr/lib/libkmailprivate.so
#7  0xb7dc8da1 in KMFolderMbox::open () from /usr/lib/libkmailprivate.so