>>Just after the update by box became unbootable and could recover hardly. Before update (if you'd) be sure you have backed up everything.
>
>I update 2 boxes w/o any problem.

Well I updated mine too later and had no problem. I don't know what was the culprit in first one. It asked if I wanted to update, yes I said. After a few moments computer restarted w/o a warning (I wasn't doing anyhthing) and boot failed continously (tried all the options before going to recovery console).
Cetin