The last two nights directly after upgrading to their 5 meg service from 3 brought with it ping times often from 935 to 1300 and everything was timing out to boot, mainly in the early to late night went from bad to worse plus the only reason I tried it was to at least get the 1 meg upload promised but it too was below so went back to the 3 meg and everything is running normal with pings at 23 to 52.
Will give it a few months to get the bugs worked out as it looked like they were having configuration problems but normally you would want this kind of stuff worked out BEFORE you roll it out.
This is what you get when you keep hiring Comcast rejects Wave.