I run 1.9.5 beta with no problems until now.

I use WPA to connect to an Centrino Laptop under XP and Linux Ubunutu Breeze without trouble.

For XP I had to use the latest Intel drivers, the drivers
provided by Asus for my M2400N Laptop don't work stable with WPA and
also don't wake up from powersave mode.

My ASUS WL-100g card does not work stable on XP with WPA,
I get a connection but not IP Number assigned by dhcp.

So I have two ASUS wlan products not working with ASUS drivers together
with the asus wl 500g using WPA. This is independent from wl500g firmware version.

I'm happy I found a solution and that 1.9.5 beta works pretty good for me.

Regards,

Chris