[ET9x00] RTL8191SU dropping a lot of packets?

[Hontch]

Getting a fairly decent transfer rate of 4000kb/s but I seem to be dropping a lot of packets, is this normal?

wlan0     Link encap:Ethernet  HWaddr 00:02:72:xx:xx:xx
          inet addr:192.168.1.79  Bcast:192.168.1.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:8145993 errors:0 dropped:1535880 overruns:0 frame:0
          TX packets:3857719 errors:0 dropped:1 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

Thanks