tedster - 8:52 pm on Sep 30, 2012 (gmt 0)
Welcome to the forums, farouk. There's no doubt in my mind that an exact match in the file path part of the URL cannot be a problem. It's WAY too common a practice.
Not only that, this update did not demote all Exact Match Domains - not by a large amount! The target was exact match domains that Google determined as "low qualtiy", by whatever criteria they used to make that judgment.
We're in the early days on this, but it certainly isn't clear right now how they made that determination.