Hello, Maybe someone will run into the same problem, so here is how it works for me. I could not get work my wlan card (ralink rt61) with the driver from rt2x00.serialmonkey.com under CentOS 5 (2.6.18-8.1.1.el5). All drivers (beta and daily cvs) from this site freezes my system. So I get the driver from the Ralink support at http://www.ralinktech.com/ralink/Home/Support/Linux.html (RT2501PCI/mPCI/CB(RT2561/RT2661)). With this driver, my wlan card works very well (WPA2, AES). CentOS 5 is great. regards Olaf