Hi Vasil,
I don't think having exact match anchor text is a negative signal in itself, as there are some sites and brands built on the back of an exact match domain name. It's more about the %'s involved, if you've focused on exact match anchor text too much over more branded terms, and more natural looking anchor text (eg. www.brandname.com, brandname.com, click here, brand name product, product name, etc.) then you may have suffered with the latest updates.
Here's some links for SEOMoz blog posts that might be of interest to you on this topic;
May 2nd, 2012 - http://www.seomoz.org/blog/penguins-pandas-and-panic-at-the-zoo
Jan 5th, 2012 - http://www.seomoz.org/blog/all-about-anchor-text-whiteboard-friday
Sep 8th, 2011 - http://www.seomoz.org/blog/beyond-exact-match-anchor-text-to-next-generation-link-signals-whiteboard-friday
Hope that helps.
Greg
