I think I saw others report this quite a while ago, but I couldn't find posts referencing it through the search function. My Pro1X will freeze for 30 to 40 seconds from time to time. I would guess it happens 1 to 3 times per day. No buttons respond when it is in this state. When it comes out of this state, everything works.
This is with a rooted phone, running the stock android OS.
Do others have this issue? Has anyone found a cause/solution?