I was surprised to get a story back in the mail today. The New Yorker held onto "Great White Ship" over six months before turning it loose. I assume that's a positive sign, since rejections are fast and acceptances come slowly. I assumed about a month ago I screwed up my submission log, and I sent them a query letter.
I don't mind waiting six months to hear from a mag like The New Yorker. Gardner was taking five months to get back to me towards his reign at Asimov's, but it was worth it. I've gotten handwritten notes back twice from The New Yorker.