System freeze caused by ath9k driver
Solved the issue. I compiled it from these patched sources. As ath9k drivers come by default on 2.6.38 kernel, the directory /lib/modules/2.6.38-8-generic/kernel/net/wireless/ath should be removed. For compiling and installing this guide is usefull.
- Turn on Network Booting feature in Bios
- Move Network boot to first place in boot priorities in Bios
After two days of trying all possible distros, 32 and 64 bit, updating kernels and I accidentally tried this and this was the only thing that worked )