Q: Info on New Retina Macbook pro 13 Haswell system hang/unresponsive

Since people keep on asking the same questions over and over again, here is sort of a summary of the Thread https://discussions.apple.com/thread/5481839

1. Apple is aware there is a problem, see http://support.apple.com/kb/TS5296
2. If an USB device is plugged in, freezes do not happen.
3. There are errors in the syslog reading "kernel[0]: The USB device Apple Internal Keyboard / Trackpad (Port 5 of Hub at 0x14000000) may have caused a wake by issuing a remote wakeup (2)" which seems to be related to the problem.
4. So far nobody has been found who has a 13" Retina Haswell MacBook Pro who does not have these errors in the system log when no USB device is plugged in.
5. There are very(!) few people who have reported to not have had any freezes with a Haswell rMBP 13".
6. Many people report that their rMBP does not freeze for 3 days and then it does. (Which could explain the few people in point 5)
7. Some people reported graphical errors as well. Here is a description from the user "RIVERSTALKER": "i had a little grey line across my screen for a second, some flinkering lines at the bottom right arround the dock, also for a second and the same above the dock at the bottom left side. this happens just for a second and it is hard to see because the user is aware of other things on the screen."
8. The freeze seems to be related to Mavericks as some people report having the same problem with older devices after upgrading to Mavericks.
9. Still, nobody can be 100% sure that it isn't a hardware problem after all. Apple does not comment on this officially.
10. Communication by Apple is very poor, as well as internal as external. There are still people of the support team of Apple who claim to have never heard of this before and (besides the statement in point 1) there is no other official word from Apple.
11. Many people returned their 13" rMBP only to find the new device has exact the same issue. This once more points to the direction that all 13" rMBP are affected.
12. Apple speaks of "rare circumstances". This is true in the term of "per rMBP it usually only happens every 6 hours or something alike". It is not true in terms of "only on a few devices" as all 13" rMBP seem to have this problem. Some people may not realize it due to some USB device plugged in. (see point 2)

Hope that helps