connect problems on SMP

[Richard Nyberg]

I'm having troubles on my SMP machine. Often new connection attempts
just hangs. This makes it almost impossible to e.g. browse the web.
When they don't hang everything works as expected.

The hangs doesn't seem to occur on a UP kernel.

A tcpdump log of a hanging connection attempt is attached.

        -Richard
10:01:49.751364 murmeldjur.it.su.se.1069 > jabber.su.se.jabber-client: S 3230315298:3230315298(0) win 57344 <mss 1460,nop,wscale 0,nop,nop,timestamp 132180 0> (DF)
10:01:49.751753 jabber.su.se.jabber-client > murmeldjur.it.su.se.1069: S 199654686:199654686(0) ack 3230315299 win 5792 <mss 1460,nop,nop,timestamp 751934241 132180,nop,wscale 0> (DF)
10:01:49.751784 murmeldjur.it.su.se.1069 > jabber.su.se.jabber-client: R 3230315299:3230315299(0) win 0 (DF)
10:01:52.749583 murmeldjur.it.su.se.1069 > jabber.su.se.jabber-client: S 3230315298:3230315298(0) win 57344 <mss 1460,nop,wscale 0,nop,nop,timestamp 132480 0> (DF)
10:01:52.749936 jabber.su.se.jabber-client > murmeldjur.it.su.se.1069: S 202652885:202652885(0) ack 3230315299 win 5792 <mss 1460,nop,nop,timestamp 751934541 132480,nop,wscale 0> (DF)
10:01:52.749969 murmeldjur.it.su.se.1069 > jabber.su.se.jabber-client: R 3230315299:3230315299(0) win 0 (DF)
10:01:55.949646 murmeldjur.it.su.se.1069 > jabber.su.se.jabber-client: S 3230315298:3230315298(0) win 57344 <mss 1460,nop,wscale 0,nop,nop,timestamp 132800 0> (DF)
10:01:55.950008 jabber.su.se.jabber-client > murmeldjur.it.su.se.1069: S 205852940:205852940(0) ack 3230315299 win 5792 <mss 1460,nop,nop,timestamp 751934861 132800,nop,wscale 0> (DF)
10:01:55.950067 murmeldjur.it.su.se.1069 > jabber.su.se.jabber-client: R 3230315299:3230315299(0) win 0 (DF)
10:01:59.149460 murmeldjur.it.su.se.1069 > jabber.su.se.jabber-client: S 3230315298:3230315298(0) win 57344 <mss 1460> (DF)
10:01:59.149808 jabber.su.se.jabber-client > murmeldjur.it.su.se.1069: S 209052757:209052757(0) ack 3230315299 win 5840 <mss 1460> (DF)
10:01:59.149847 murmeldjur.it.su.se.1069 > jabber.su.se.jabber-client: R 3230315299:3230315299(0) win 0 (DF)