I have one with manufactured date 12/11/12 and I don't have any of these problems.
Keyboard feels great. no dropped connection and speed is similar to my series 9 15". the fan is on most of the time...but it is pretty silent, unless you are sitting in a noiseless room then you can hear its murmur...but how often are you going to be in that situation.
As for the price....it is certainly better than 999 if someone is adamant to have one.
I for one, prefer to have my series 9 15" because i find myself stop using the touch screen after awhile. The fingerprints and smudges just drive me crazy when I need to work on a document for an extended period of time.
Bit off topic, but could you please comment on your experience with the track pad on both this and the 9? I've tried both in store, but it's hard to notice much until you've used it in multiple environments and situations.