Thank you for your post.
We do not have a list of issues that were fixed with each driver update, but we would like to investigate this a little further. For this we would need you to contact us directly to set up a ticket you may email us at MCDsupport@mailbox.intel.com. You may add my name in the subject line (Nathalie)
Some common things that may cause random disconnects: test a system setting it to maximum performance, to avoid the adapter from going to sleep, make sure that the network uses specific security and channel settings not combined ones (avoid setting a network to 2.4 + 5.0GHz set it to either 2.4 or 5.0Ghz, avoid setting it to TKIP/AES, set it to either TKIP or AES...etc)
Avoid using old profiles, set up new ones on one of the system and migrate it only to systems with same driver version.
I had silimar issue with usnetworkguy where our users had sporadic and intermittent connection to wireless connection. We are using cisco WISM controllers and cisco 1252 AP's througout the site. We had experienced this issue before and we thought it was an isolated since only a few users are affected. All of us are using intel(R) Centrino(R) Advance-N 6200 AGN adapters in all laptops. Currently, the numbers are growing but not all are affected. We couldn't see any issues on the controllers and the AP's since not all in the same are are affected. We were able to check the affected PC and here are the test results:
It can ping to our intranet sites but could not go in the internet.
others can go in the internet but could not open our intranet sites.
- all of these occured after they passed authentication and had proper IP address from DHCP server
This happens only to other users but not all and we could not trace or duplicate the error. We just unplug the wireless cards or swap wireless cards with other laptops with same model and all goes well again. Any help will be greatly appreciated.
Thank you in advance