afaik there are no alternative firmwares for this router. I know performance is slow if IPS is enabled so try disabling it. are you using gigabit lan adaptors on your PC's? if so try enabling Jumbo Frames (size depends on size of LAN port on your PC) in the L2 Switch settings.. if you are not using IPV6 the set RVS4000 to IPV4 only. i have also seen two other betas which i will put up on the site sortly. 1.2.06 and 1.2.05 only changes i see are these: Firmware 1.2.06 fixed the following issues. - "Deny All" ACL Rule blocks internet access. - RVS4000 supports Vista (SP1 and non-SP1) QVPN 1.2.8 (with public ip and with private ip).