kde 4.2 crashes on login, Ubuntu 8.10

[Dmitry Hazin]

Here is short description of my actions:

0. I have Ubuntu 8.10 with  nvidia 7600GS; problem persists with
177.xx, 180.11 (from launchpad) and 180.25 drivers

1. I used following repository for kde 4.2:
deb http://ppa.launchpad.net/kubuntu-experimental/ubuntu intrepid main
multiverse restricted universe

2. Installed kubuntu-desktop, selected kdm as a default display manager

3. Reboot

4. Login to kde fails, there are following lines in syslog:

Jan 29 00:33:05 dhazin kernel: [  464.893443] kded4[9823]: segfault at
0 ip 48be08a5 sp bf8be9d0 error 4 in
libQtGui.so.4.4.3[48a34000+8f5000]
Jan 29 00:33:05 dhazin kernel: [  464.985041] kcminit_startup[9827]:
segfault at 0 ip 48be08a5 sp bfd74f90 error 4 in
libQtGui.so.4.4.3[48a34000+8f5000]
Jan 29 00:33:05 dhazin kernel: [  465.107018] ksmserver[9829]:
segfault at 0 ip 48be08a5 sp bfeb5fd0 error 4 in
libQtGui.so.4.4.3[48a34000+8f5000]



Is this a known bug and can I do anything to workaround it? Should I
post bug report somewhere and if yes what information should I place
there?