Tinyos install con'd (Some problem I did not understand in the first time)

I just casually have the ubutu software center update some software automatically. Now the problem is that my ubutu tried to update avr-libc today and I don't know why but it failed. (That happened when I installed Tinyos at the very first beginning.) So,
either the terminal or the eclipse with Yeti2 suffered. 

Then I use "apt-get remove avr-libc" to uninstall avr-libc and "make telosb" can work but "make micaz" still fails. So I go back to link 1 in the first passage and tries to reinstall all the package again. Of course, some rpm packages like "avr-gcc-3.4.3-1.i386.rpm"
and "avr-insight-6.3-1.i386.rpm" failed as usual (don't know why). Although I installed "avarice-2.4-1.i386.rpm" and "avr-libc-1.2.3-1.i386.rpm" finally, I do think it is the latter one which helps me to repair the "make micaz" to work.

Lessons learned:

To make micaz work, avr-libc must be installed. However, the direct "apt-get install avr-libc" does not work maybe due to the collision between the newest version of avr-libc and ubuntu 11.04. So, it is better to download  "avr-gcc-3.4.3-1.i386.rpm" and
install it manually.