The problem is that the main page is infected hxxp://miespaciovirtual.com/ and avast network shields blocks that website and all websites containing *miespaciovirtual.com* in them.
the other pages http://miespaciovirtual.com/pagos/Mex/ and http://miespaciovirtual.com/pagos/ don't seem to be infected.
Last night I did find a weird code in the "root" of the website, and was removed, but the two URL's in question are ALWAYS reached by a direct referrer and there are no links between the root and this two URL's, in other words, people trying to get to those two URL's never visit another part of the website.
That's why I didn't even look at the "root" of the website, anyway, if I'm understanding this right, AVAST is not really scanning the pages in real time, but relaying in some kind of database??
Or how is that you can get a positive in a clean page if another page in the site (with no internal links between) is infected?
Finally and more important what should to get rid of those false positives that AVAST is giving to my users??