>> Can someone help? By some incantation that I cannot now seem to
>> reproduce, I was able to obtain and install:
>>    mtx-context     | current version: 2011.11.14 16:17
>> 
>> In an attempt to update this version, I ran first-setup.sh found at
>> http://minimals.contextgarden.net/setup/first-setup.sh and what got
>> installed was:
>>    mtx-context     | current version: 2011.05.18 18:04
> 
> This looks like the ConTeXt version in Debian.

That is the current stable version [1].

>> Can anyone tell me how to get back to 2011.11.14 or to the latest version?

You'll either have to wait until Mojca or Hans fix the rsync archive, or you pull the minimals from gitorious [2].

Florian

[1] http://www.pragma-ade.nl/download-1.htm
[2] http://www.gitorious.org/context