Packet loss and really slow wireless network connection

[willrobbo]

I've just installed Fedora 15 Beta and I'm having issues with the wireless network connection. The network connection is slow (google.com takes about a minute to load fully). Packet loss seems to be the issues (see below), although the laptop and router work together nicely when I'm using Windows.

Any ideas?

Thanks

iwconfig output:
wlan0 IEEE 802.11bgn ESSID:"BillyQ"
Mode:Managed Frequency:2.437 GHz Access Point: 00:26:5A:1F:E3:F2
Bit Rate=108 Mb/s Tx-Power=18 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:on
Link Quality=68/70 Signal level=-42 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:1 Invalid misc:38 Missed beacon:0

lspci | grep Network output
06:00.0 Network controller: Atheros Communications Inc. AR928X Wireless Network Adapter (PCI-Express) (rev 01)

ping google.com output
PING google.com (209.85.227.104) 56(84) bytes of data.
64 bytes from wy-in-f104.1e100.net (209.85.227.104): icmp_req=1 ttl=52 time=29.9 ms
64 bytes from wy-in-f104.1e100.net (209.85.227.104): icmp_req=2 ttl=54 time=26.3 ms
64 bytes from wy-in-f104.1e100.net (209.85.227.104): icmp_req=3 ttl=54 time=24.4 ms
64 bytes from wy-in-f104.1e100.net (209.85.227.104): icmp_req=6 ttl=54 time=73.8 ms
^C
--- google.com ping statistics ---
10 packets transmitted, 4 received, 60% packet loss, time 9005ms
rtt min/avg/max/mdev = 24.494/38.654/73.833/20.404 ms