Experiencing very slow browsing at times (atheros wireless)

[Petr Janda]

    Maybe there is a checksum problem or something.  Do you have any
    hardware accel features turned on on your client?  Do 'ifconfig' and
    dump the output.  Try turning them off.
    Maybe also try turning off TCP sack and window scaling
    (net.inet.tcp.sack=0, net.inet.tcp.rfc1323=0), in case there's an
    issue there.  I noticed that the server is using both, and there
    could be a bug on the server (or in DragonFly, but more likely on the
    server if that turns out to be the problem).
  
[elevator] ~% ifconfig
ath0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
       inet 192.168.1.50 netmask 0xffffff00 broadcast 192.168.1.255
       inet6 fe80::20f:b5ff:fefa:9196%ath0 prefixlen 64 scopeid 0x1
       ether 00:0f:b5:fa:91:96
       media: IEEE 802.11 Wireless Ethernet autoselect (OFDM/54Mbps)
       status: associated
       ssid homenetwork channel 11 bssid 00:19:db:0a:39:e6
       authmode OPEN privacy OFF txpowmax 37 bmiss 7 protmode CTS burst
       bintval 100
fxp0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> mtu 1500
       ether 00:02:b3:0b:9e:0f
       media: Ethernet autoselect (none)
       status: no carrier
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
       inet 127.0.0.1 netmask 0xff000000
       inet6 ::1 prefixlen 128
       inet6 fe80::1%lo0 prefixlen 64 scopeid 0x3
ppp0: flags=8010<POINTOPOINT,MULTICAST> mtu 1500
sl0: flags=c010<POINTOPOINT,LINK2,MULTICAST> mtu 552
faith0: flags=8002<BROADCAST,MULTICAST> mtu 1500
I'm going to wait for the next slowness and then I'll change the sysctl's.

Im not aware of any hardware accel features. The ifconfig looks quite 
ordinary to me.

Petr