FreeBSD CURRENT 7.x

[Outback Dingo]

The past few days ive been getting errors and "sluggishness" on a system
with both sk and msk chips in it. Any idea how to track this down or whats
changed that has affected the performance of these cards ?? Noticed also its
two different errors. These cards we functioning fine. Help appreciated,
Thanks in advance

The application is lighttpd on port 80. kernel is pretty generic with pf
enabled

7.0-CURRENT FreeBSD 7.0-CURRENT #0: Wed Jun  6 03:50:46 PHT 2007

TCP: [xxx.xxx.xxx.xxx]:2400 to [xxx.xxx.xxx.xxx]:80 tcpflags 0x11<FIN,ACK>;
syncache_expand: Segment failed SYNCOOKIE authentication, segment rejected
(probably spoofed)
TCP: [xxx.xxx.xxx.xxx]:12236 to [xxx.xxx.xxx.xxx]:80 tcpflags 0x4<RST>;
tcp_input: Listen socket: Spurious RST, segment rejected
TCP: [xxx.xxx.xxx.xxx]:3694 to [xxx.xxx.xxx.xxx]:80 tcpflags 0x4<RST>;
tcp_input: Listen socket: Spurious RST, segment rejected
TCP: [xxx.xxx.xxx.xxx]:10376 to [xxx.xxx.xxx.xxx]:80 tcpflags
0x18<PUSH,ACK>; syncache_expand: Segment failed SYNCOOKIE authentication,
segment rejected (probably spoofed)
TCP: [xxx.xxx.xxx.xxx]:10376 to [xxx.xxx.xxx.xxx]:80 tcpflags 0x11<FIN,ACK>;
syncache_expand: Segment failed SYNCOOKIE authentication, segment rejected
(probably spoofed)
TCP: [xxx.xxx.xxx.xxx]:15377 to [xxx,xxx.xxx.xxx]:80 tcpflags
0x18<PUSH,ACK>; syncache_expand: Segment failed SYNCOOKIE authentication,
segment rejected (probably spoofed)