Upgrade to 5.0 problem - segfault in guests

[andi77]

Hello,
i have two hosts with virtualbox 4.2 (Debian wheezy) which i want to upgrade to 5.0. Each host has 3 guests (Debian wheezy and jessy).

Host one: the upgrade worked without any problems (remove 4.2, install 5, install Extension pack).

Host two: the guests don't work after upgrading. I see different errors.

-ping is possible
-ssh from Windows (putty) to the vm is not possible (signature problem)
-ssh from Linux to the vm is possible
-scp from Linux to the vm stopps in the middle of the file
-fail2ban ist not starting on the vm
-mysql replication stopps working because relay.log get's corrupted

kernel: [ 20.612095] fail2ban-client[2937]: segfault at f2f79fc50 ip 0000000000461ae1 sp 00007fffef916170 error 4 in python2.7[400000+257000]

Guest additions 4.1 (provided whith wheezy) were installed. But the problem also exists without them.

after removing virtualbox 5 and reinstalling virtualbox 4.2 the vm is working again.

Any ideas how i can resolve the problem?

Thanks
Andi

[andi77]

New Details:
Host:
Linux version 3.2.0-4-686-pae

It seems that only guests with Linux version 3.2.0-4-amd64 are not working with virtualbox 5. They are working with virtualbox 4.2

[klaus]

As long as you don't provide VBox.log (which is documented pretty much everywhere to be the minimal requirement for getting any VM related issue investigated) I don't think you'll get much response.