I finally got to find why this happened:
in the project [3] Description: field I did insert the following

Calendars as from<br><p>
<br />Nachum Dershowitz, Edward M. Reingold "<a
href='http://emr.cs.iit.edu/home/reingold/calendar-book/third-edition/index.html'>Calendrical
Calculations</a>"
Cambridge University Press; 3rd edition (December 10, 2007);
Paperback; ISBN-13: 9780521702386</pre><br /></p>


NOTE that the anchor user href with single quotes because I wanted
double quotes to surround
the book title.
This seems to be ok as far as the specs say, see [1] and [2]; and the
xhtml code was correctly
interpreted by all the browsers I tried with (IE, Firefox, Chrome).

The problem is in
	MCHttpRepository>>parseFileNamesFromStream: aStream
		| names fullName |
		names := OrderedCollection new.
		[aStream atEnd] whileFalse:
			[[aStream upTo: $<. {$a. $A. nil} includes: aStream next] whileFalse.
			aStream upTo: $".
			aStream atEnd ifFalse: [
				fullName := aStream upTo: $".
				names add: fullName unescapePercents]].
		^ names
where the parsing for anchors assumes attributes to be surrounded by
double quotes.

I for now change my project description and get by the problem.
Maybe somebody with more courage than me will be able to figure out a
fix for this if deemed necessary.

Hope it helps
Bye
Enrico

[1] http://www.w3.org/TR/xhtml1/#h-4.4
[2] http://www.w3.org/TR/html4/intro/sgmltut.html#h-3.2.2
[3] http://www.squeaksource.com/Calendrica.html


On Tue, Mar 8, 2011 at 17:01, Enrico Spinielli
<enrico.spinielli at googlemail.com> wrote:
> I am aligned with Squeak 4.2 Trunk: it happens both on Mac and Windows
> and Linux.
>
> On Tue, Mar 8, 2011 at 17:00, Chris Muller <ma.chris.m at gmail.com> wrote:
>> Well, it could be my latest change.  What version of Monticello
>> package are you running?
>>
>> FYI, I'm getting ready to unload a major MC upgrade..
>>
>> On Tue, Mar 8, 2011 at 6:30 AM, Enrico Spinielli
>> <enrico.spinielli at googlemail.com> wrote:
>>> yes. And it happens even when I start from scratch a new image and
>>> define a new repo...
>>> this hints at the server side, but I haven't seen it reported before
>>> so I asked to see if others have experienced it...
>>>
>>> On Mon, Mar 7, 2011 at 22:27, Chris Muller <asqueaker at gmail.com> wrote:
>>>> ess the Refresh button in the MCRepositor
>>>
>>>
>>>
>>> --
>>> Enrico Spinielli
>>> "Do Androids dream of electric sheep?"— Philip K. Dick
>>> "Hear and forget; see and remember;do and understand."—Mitchel Resnick
>>>
>>
>
>
>
> --
> Enrico Spinielli
> "Do Androids dream of electric sheep?"— Philip K. Dick
> "Hear and forget; see and remember;do and understand."—Mitchel Resnick
>



-- 
Enrico Spinielli
"Do Androids dream of electric sheep?"— Philip K. Dick
"Hear and forget; see and remember;do and understand."—Mitchel Resnick