I found this in one of Canada's national papers:
Jerry Seinfeld took potshots at two of his former sitcom co-stars at a surprise comedy club appearance last week. At the Comedy Cellar in New York, the millionaire comic and new daddy took to the stage for a 20-minute stand-up routine. Someone in the audience asked about a possible Seinfeld revival. Jerry snapped, "Yes, when all of our careers turn to shit, and two are down already." His comments were no doubt targeted at actor Michael Richards (Kramer), whose sitcom was axed after a critical bashing, and Jason Alexander (George), whose highest-profile turn recently was as Boris Badenov in last summer's The Adventures of Rocky & Bullwinkle. Not that there's anything wrong with that.
BJB