Same here....
$ kmail kmail: symbol lookup error: /usr/lib/libkmailprivate.so: undefined symbol: fstat64 ERROR: Communication problem with kmail, it probably crashed.
Version: kmail 4:3.5.7enterprise20080118-0ubuntu1 hardy Kernel: 2.6.23-ck1 i686
Same here....
$ kmail libkmailprivate .so: undefined symbol: fstat64
kmail: symbol lookup error: /usr/lib/
ERROR: Communication problem with kmail, it probably crashed.
Version: kmail 4:3.5.7enterpri se20080118- 0ubuntu1 hardy
Kernel: 2.6.23-ck1 i686