Yahoo crawls like a baby all right, wants to get into everything and slurps a wee bit down every few hours, all day and all night. While I'm not finding a complaint on my end, judging from some of the other responses, it's prone to a bad burp or three as well. :)
Well I had just index page in the crawl for 4 days and now it shows more pages in the crawl. But still the main pages of my site are not showing in the crawl. It is a penalty because one of my site is facing the same peoblem in google. It seems like the penalty are same in both of the SE. Lets say the url of my site is www.wdiget.com and I type widget in Y! search mysite doesnt come first. It always used to come first. So there is some penalty but I am not sure what might be the penalty.