I know this is a very old post but I feel I should reply as reading this post almost stopped me from accepting an offer from this uni.

First, I should state that I am only working for this university since September so I am in no position to deny or confirm what the OP stated in his post. It may or may not be true but I can only speak about my own experiences I've had here since Sep 2010. I have also taught elsewhere in China so I do have some sort of scale to judge the place on.

Accommodation
When I arrived I was given the choice to live in either the new campus outside the city or live in the city campus.
The new campus apartment is very spacious. It consists of living room, kitchen, bathroom, bedroom and a decent size balcony to hang your washing out or relax with a few beers (whatever suits yourself). Personally its a bit too quiet for me, I'm more of a city person.
Regarding the city campus, I will start with its in a great location. City centre, night life, gym and anything else you need all within a short walk or 5min taxi drive. Bad points about the accommodation is the rooms are small. We're housed in the foreign students building so we basically have our own dorm style room. Having said that, its clean and we have everything we need such as our own kitchens and bathrooms.

I will take the OP's bad points individually.
1) Don't know if the OP has lived and worked in other cities in Southern China but most apartments and indeed classrooms don't have heating.
2) Have to agree with the OP about the transport to the new campus. But, as I write this, the new road to the city is currently being tarred and should be finished by the end of the summer in time for the Asian games which are being held here in Nanchang. Once completed I'm sure there will be a regular bus service running to and from the campus. Also the new road will cut travel time to about 30 minutes.
3) This is China, don't know how long you've lived here but most things don't happen in a hurry! Don't know about the new campus but here in the city campus anything that I have needed done has always been seeing to very promptly.
4) Don't know what your on about with two phone cards!! If your talking about your mobile number you simply need to go to China Mobile or whatever your network is and get the right type of card that will let you ring where ever you need to. (including international calls)
5) I don't know the previous Chinese teacher who was in charge of the foreign teachers but I find the current one to be very helpful. He usually lets us know about any change in our schedule a week or so in advance. Also, (like most of the faculty here) he has excellent English skills so there is no problem communicating with him.
6) I don't know about the new campus as I don't live there so I won't comment on it. Here in the city campus do we have no problems with the guards. The foreign teachers and foreign students building is locked at 11 o'clock. But foreign teachers are free to come and go as we please, we simply have to knock on the window if were home later than 11. I have come home at all hours of the morning and none of the guards have said a bad word to me so far.
7) I heard this is still sometimes a problem in the new campus. No such problems in the city campus do.
Totally agree about the Internet, its rubbish!!
9) The school currently has 5 foreign teachers, 3 of us have renewed for another year and 2 will return home to their own countries.
10) As far as I know no one has entered my room without my knowledge. (I don't think any of them would either)
11) Haven't received mail so don't know anything about it.
12) I don't know where the library is and don't really need to know. Bring your own books or buy them on-line would be my advice.

Overall it ain't a bad place to work. If your living in the city the school runs a teachers bus to and from the new campus. One problem I do have is they only offer 10 months contract, (meaning they don't have to pay you summer holidays) all do this is becoming a pretty common thing among Chinese universities.

If anyone would like more information Jiangxi University of Traditional Chinese Medicine feel free to ask.