[CentOS] Not firewall, but what?

Thanks everyone for feedback.

This could be something weird with the xen network-interface bridging. 
This problematic server-system is the only xen guest that shares *both* 
network cards on the machine.

I asked my upstream ISP to check things from their side.

I hope I will soon get a ssh account on some client where the error is 
reproducible. Then I could start testing.

- Jussi

-- 
Jussi Hirvi * Green Spot
Topeliuksenkatu 15 C * 00250 Helsinki * Finland
Tel. +358 9 493 981 * Mobile +358 40 771 2098 (only sms)
jussi.hirvi at greenspot.fi * http://www.greenspot.fi