Hi everyone, I've been watching the posts for quite a while, but have only had the z for three days now so I can actually start posting like I know what I'm talking about...
watch out for the irk driver (I used v0.10.0). I'm sure it worked perfectly for the platforms it was designed for, but when I loaded it on my Z I came across an interesting problem.
It has been noted that you need to select "5600..." in the settings to get the kb to work, but when I happened to reset while this was not selected, I had to reformat. the boot got stuck repeating the "wait 30 seconds" screen.
The Z and the pocketop came on the same day, and so the keyboard was my first priority in getting set up, so we're talking very slim probability of it being another issue. Fresh Sharp ROM, not even any other packages installed. I have reproduced the effect several times.