Thanks, there has been a small issue with the updates this time indeed, but we discussed this with TAC and we have a clear view.
64.2.11 come out and went away very quickly as it had a major bug as you said. It's the only bug on the release notes of 6.4.2.11. To be honest I never even noticed the 6.4.2.11 being available for download.
However, looking at the archives, I found 6.4.2.11, which has a fix for our issue:
BUG ID: 122542, 121740, 122374, 122539,122914
Symptom: The station management process of the AP was busy, that resulted in clients failing to
associate with the AP. This issue is resolved by enhancing the WLAN driver.
Scenario: This issue was observed when client match was enabled and the controller moved the client
from one AP to another. This issue was observed on AP-110 Series, AP-120 Series, and AP-130 Series
access points associated with controllers running ArubaOS 6.3.1.x, 6.4.2.x, or 6.4.3.x.
Platform: AP-110 Series, AP-120 Series, and AP-130 Series access points.
Reported Version: ArubaOS 6.4.2.9
So as per standard practice, 6.4.2.12 contains all those fixes as well.
As the download page for current releace has the 6.4.2.10 and 6.4.2.12, I asked them to add a remark on the .12 that bug fixes compared to the .10 are on the archive folder, release .11
If that makes sence...
:)
In any case it appears to be fixed.