"ipw3945: detected geography ABG" slows boot time by 40s

I've installed (and update on a daily basis) Ubuntu 7.04 herd 5 Live CD on a following system:

Dell Inspiron E1405

Intel 945GM mainboard
Intel Core Duo T2300E processor
1 GB 533Mhz Dual Chanell RAM
120GB Seagate SATA
Intel PRO/Wireless 3945 MiniPCI Wifi Adapter

The system boots to GDM login in 76 secs, however, it halts at "Configuring network initialization..." for about 40 secs flashing WiFi diode regularly.

I checked dmesg and found this:

[ 18.268000] ipw3945: Detected geography ABG (11 802.11bg channels, 13 802.11a channels)
[ 56.880000] NET: Registered protocol family 10

So it looks like testing/registering of the available channels takes so much time...

Is there any way to speed this up?

I've also found something like this:
Mar 28 11:17:22 ziomal18-laptop kernel: No module symbols loaded - kernel modules not enabled.

Would preloading of this kernel module help? To be honest I just use latest generic kernel available and would rather stick with it unless there's no other way.

PS. I also installed bootchart and the results are attached.