Same problem, can't play ANY vids, I tried the uninstall and reinstall of flash player, did not work. Here is my information:
My Account Information
Primary Account: False Provider Codes: bw, s, d, al, ci, bh, a, y, bq, bx, ce, cd, cf, by, bu, at, bs, g, ak, cb, ch, ar, aw, e, aj, cg, bz, bm, au, bl, bv, b, u, bp, bk, br, bo, bt, i, cc, f, m, ca, ai, h, ad, bn Internet Subscriber: True Cable TV Subscriber: True Voice Subscriber: False
Now I am using a login attacjed to my parents account but currently staying with my inlaws, they also have a comcast account. I have been living here for 6 months with no trouble until today.