Basically by just about any measure, Dallas was a middle of the road team in pass protection last year.
Keep in mind, Dallas was 24th in offensive line experience last year (combined game starts of 2 Ts, 2 G and 1 C who had the most games started in 2011). Not great, and not necessarily where you ideally want to be, but a far cry from OMGZ TEH WURST LINEZ IN TEH FUTBAHL HIZTORIEZ!11111 like some internet experts are claiming (mostly based on nothing but raw emotion and faint rememberences of events that took place 8 months ago). It was certainly no where near as much of a priority as secondary and pass defense on the offseason "to do" list. .
Has Dallas done anything improve from a middle of the road pass offensive line last year? Well, according to the intrawebbings, no. I mean ......other than replacing both guards in free agency, having new starters at four of the five starting positions from opening day 2011, and bringing in one of the most widely regarded OL coaches in the NFL and making him assistant head coach in title and practice ... no. Other than those few minor tweaks, absolutely nothing has changed from where we were this time last year.