After several annoying points with installing ubuntu 11.10 on my acer aspire one 722 i finally made this run.

After installing i had freeze issues and solved them by putting network boot on first priority on the bios.

Yesterday all worked fine, no problems with wlan etc. But today all is crashing down. Atm iam at the university and tried to log into the public wlan. With that came : i cannot shut down, terminal is not working, very slow perfomance, some apps are starting like libre office, some not like system manager, buttons are not reacting, wlan symbol is spinning all the time. Any suggestions i can do?