need advice

[Sergey Basmanov]

Hi, All.
Could anyone tell me, why wds link changes its speed when idle?
I have a lot of messages in syslog:
May 20 14:55:42 survivor kernel: wlan0: STA 00:40:5a:04:23:74 TX rate 
lowered to 55
May 20 14:55:43 survivor kernel: wlan0: STA 00:40:5a:04:23:74 TX rate 
raised to 110
May 20 14:55:44 survivor kernel: wlan0: STA 00:40:5a:04:23:74 TX rate 
lowered to 55
May 20 14:55:44 survivor kernel: wlan0: STA 00:40:5a:04:23:74 TX rate 
raised to 110
May 20 14:55:47 survivor kernel: wlan0: STA 00:40:5a:04:23:74 TX rate 
lowered to 55
May 20 14:55:49 survivor kernel: wlan0: STA 00:40:5a:04:23:74 TX rate 
raised to 110
May 20 14:55:56 survivor kernel: wlan0: STA 00:40:5a:04:23:74 TX rate 
lowered to 55
May 20 14:55:57 survivor kernel: wlan0: STA 00:40:5a:04:23:74 TX rate 
raised to 110
May 20 14:56:01 survivor kernel: wlan0: STA 00:40:5a:04:23:74 TX rate 
lowered to 55
May 20 14:56:02 survivor kernel: wlan0: STA 00:40:5a:04:23:74 TX rate 
raised to 110
May 20 14:56:02 survivor kernel: wlan0: STA 00:40:5a:04:23:74 TX rate 
lowered to 55
May 20 14:56:03 survivor kernel: wlan0: STA 00:40:5a:04:23:74 TX rate 
raised to 110
May 20 14:56:20 survivor kernel: wlan0: STA 00:40:5a:04:23:74 TX rate 
lowered to 55
May 20 14:56:20 survivor kernel: wlan0: STA 00:40:5a:04:23:74 TX rate 
raised to 110
May 20 14:56:21 survivor kernel: wlan0: STA 00:40:5a:04:23:74 TX rate 
lowered to 55
May 20 14:56:22 survivor kernel: wlan0: STA 00:40:5a:04:23:74 TX rate 
raised to 110

STA 00:40:5a:04:23:74 - remote end of wds link.
Average link SNR ~25. When I connect my linuxbox to AP 00:40:5a:04:23:74 
as client (managed mode) both rx & tx speeds are always 11Mbps.

Why this could happen and how can I fix this?
Card LG WL2100P
NICID: id=0x8013 v1.0.0 (PRISM II (2.5) Mini-PCI (SST parallel flash))
PRIID: id=0x0015 v1.1.1
STAID: id=0x001f v1.7.4 (station firmware)

hostap driver: hostap_pci: 0.1.3 - 2004-02-08
kernel 2.6.3-4mdk

Thank You.