After the unpleasant experience with the HTC Desire, I decided to buy a LG Optimus 2x (vodafone). The result is not better than the HTC, repeating the same story, often crashes, and even worse, sometimes restarts alone.
Searching the Internet seems to be a common problem of hardware that Vodafone does not usually fix. It seemed that LG would show a firmware update to fix the issue, but already installed 3 updates (the last of them the v10f) and the problems have not been fixed yet.
Don't buy the LG 2x Optimus, I recommend the better (and i think more reliable) Samsung Galaxy s2.
LG # fail
LG, this goes for you, please change my mobile (lg P990), it's not working, vodafone think it's not a problem.