Last night, Google announced a huge revamp to the Google Webmaster Tools crawl errors section. The main changes include new reports, changes to the levels of details, removing some errors, and the ability to mark something as fixed.
Overall, design-wise, it does look more appealing but from what I am reading in the forums, it seems the new reports and clean up seem to confuse more webmasters then help them. In addition, there is a language bug floating around on some people's accounts that isn't helping - Google is actively working on fixing that bug.
There are few people outside of Google that know Google Webmaster Tools as well as Vanessa Fox (she did work at Google and built the product while there) and she shared her disappointment with this "upgrade" at Search Engine Land. So definitely read her review.
Here are some of the new screens:
Site Wide Errors:
URL Specific Errors:
Details - Links To:
Marked As Fixed:
If you read through the forums, you get the impression of a "wow this is cool" and then a follow up with, "oh - where can I get this old report I relied on in the past."
I assume Google will listen to this feedback and improve the reporting going forward.