Intel Centrino Advanced-N 6205 wifi card problems

[PRAGUEGUY]

High all, I have problems with my network access, namely, I have erratic failure to connect to a corporate Wifi network, (WPA2-enterprise), EAP-MSCHAPv2.
Other wifi networks are OK.
This connection is important to me, I have read a lot of complaints about this range of Intel network cards having a number of issues, like failures to connect, erratic behaviour, etc. I would like to consider
a) any bug fix, registry fix
b) get another internal wifi card
c) get a pcmcia card.
Can anybody advice on either of this?

This is a thread as example.
https://communities.intel.com/thread/31 ... 5&tstart=0

a small question - in the above thread, participants talk about "disabling N". Who, or what, is N? do they mean 802.11n mode, disable/enable, in the Adapter settings, Advanced? What does it mean, to disable this? I tried to google this, but could not understand the results.
I found the followingin Intel FAQ:

XXXXXX
What is IEEE 802.11b, 802.11g, and 802.11a?
A: IEEE 802.11b, 802.11g, and 802.11a are industry standard specifications issued by the Institute of
Electrical and Electronic Engineers (IEEE). These specifications define the proper operation of Wireless Local Area Networks (WLANs)
XXXXX

Nothing about 802.11n