I have the A180 running RC4 today (clean install). So far, during my first setup run the machine simply hung at channel 9. The second time I ran it, it rebooted around channel 29 and the third time it got through and completed with no issues.
The logs are not providing any useful information unfortunately. I could compile a version with more logging statements if I knew the code path.
The good news is that timeshifting works!
I've also ordered a VBOX 150 to compare.