bird generating 600Mbit traffic

Hello, bird (1.3.10, earlier versions too) sometimes starts flooding my network with ospf packets, generating over 600Mbit of traffic. tcpdump shows traffic between two bird machines, problematic one sends LS- Request then receives LS-Update, asks Request again, receives LS-Update and so on. http://ixion.pld-linux.org/~arekm/p2/log-bird.txt Any ideas on what could be the reason for such behaviour? Thanks, -- Arkadiusz Miśkiewicz, arekm / maven.pl