I've installed QGIS 2.0.1 on Ubuntu 12.04. exactly as explained on qgis.org . Unfortunately QGIS crashes when trying to use any GRASS model (r.aspect as example): just opening QGIS, click on toolbox expand toolbox, click on GRASS function r.aspect (as example) and it hangs... no error message, no possibility to define data for input!
It's probably a local problem but any help is appreciated. I've had QGIS 1.7.4 installed prior.
Additionally I tried on a fresh ubuntu build (12.04) in a virtualbox. same results: when trying to us a function from Grass-toolbox it crashes QGIS :-(