Finally, have found the way to put them together.
The below combination is do-able:
Laptop Compaq nc6230
Slackware version = slackware 13.1
Kernel = linux-3.0.0-rc7
hostapd = hostapd-0.7.3
TL-WN722N = using ath9k_htc (direct from the kernel)
iptables = original from slackware 13.1
dhcpd = from slackware 13.1
Connecting with iPhone4 and iPad2 IOS 4.3.3 have no problem...
The configuration files will be provided upon request.
