Hi all, After upgrading the firmware to Thibor 15c, my speedbooster didn't function anymore. The Wireless Network is found, i get an ip-adres from the router, but there is no communication possible. (for example the management console of the WRT, browsing is not possible at all). At a certain moment my wired connections didn.t function at all, so i decided to downgrade to Thibor 14, hoping to solve all this. But, Speedbooster still doesn't function with speedbooster enabled. By the way: the network card is a WPC54GS V1.2 with the latest drivers from Linksys, and is working with other non-linksys router (e.g. i've tested with an us robotics and an netgear 624 router). The Wireless connection now works with speedbooster disabled, but I like it enabled (that's why I bought this router). The upgrade went like this: Hyperwrt + Thibor 14 (Cleared NVRAM before upgrade) -> Firmware upgrade to Thibor 15c -> Cleared NVRAM again after upgrade. I've used the same method to downgrade the router to Thibor 14. Some additional info: nvram get boardflags: 0x2758 wl revinfo: vendorid: 0x14e4 deviceid: 0x4320 radiorev: 0x22050000 chipnum: 0x5352 chiprev: 0x0 corerev: 0x9 boardid: 0x467 boardvendor: 0x14e4 boardrev: 0x10 driverrev: 0x35a2500 ucoderev: 0x1220099 bus: 0x0 cpuinfo: System Type: Broadcom BCM947XX Processor: 0 CPUmodel: BCM3302 V0.8 clkfreq: 200 I hope you can all make some sense about this (my english is not too well :S, though i'm working on it).