Comment 2 for bug 365868

I am having this same issue. Only I thought it was due to switching while having some apps open during the switch (pidgin and firefox) because during switch with apps open I got some odd errors. I know, newb move to just have some "odd errors" without anything specific. I figured switching back would fix the problem, but lo and behold at next boot I didn't get any panels. Now I remember removing tomboy as well.

Ubuntu 9.04 netbook remix
eee900