[outages] major reachability issues?

Hi, Just noticed some major reachability issues to 192.149.252.76 (www.arin.net), 64.18.8.11 (login.postini.com), www.amazon.com and others. These seem to be independent of any one provider -- I'm seeing them from Time Warner, Level 3, ATT ... some work better than others ... for example, ARIN seems available if the route goes through PNAP. Is there some kind of major issue happening that others are seeing as well? Thanks, adam