exim segfault pb on debian

Hi,

i've got a recurrent problem with exim on my debian lenny,
/var/log/messages is full of lines like theses ones:
Oct 23 10:56:50 sd37 kernel: [ 6065.091620] exim[19327]: segfault at 18201612 ip 18201612 sp bfdfec1c error 4
Oct 23 10:56:50 sd37 kernel: [ 6065.105975] exim[19351]: segfault at 18201612 ip 18201612 sp bfdfec1c error 4

Does anyone know something to do to avoid these segfault ?

I also have a similar issue

[250161.396641] exim[10264]: segfault at 185bfbea ip 185bfbea sp bfe7d88c error 4 in CP1252.so[b7b44000+2000]
[250753.268171] exim[10427]: segfault at 18201612 ip 18201612 sp bfb4c190 error 4
[250757.458867] exim[10430]: segfault at 18201612 ip 18201612 sp bf9449bc error 4
[250761.196595] exim[10437]: segfault at 18201612 ip 18201612 sp bfb4c190 error 4