Installation is complete. Now my Acer Aspire One has xubuntu 9.04 running. I installed it from alternate (i386) cd and enabled encrypted lvm. I thought that it could affect performance, but so far I have not noticed such thing.
I jumped around xfce configurations and found out suitable theming and fonts for system. Now everything fits nicely in this small screen. I also updated Firefox theme to foxdie.
So, ubuntu netbook remix was ok, but somehow power computing needs traditional window management.