I think I know the answer to this. I finally got my agent in May after more than a year of looking for one. She was very excited about my quirky not-for-everyone literary fiction manuscript. She really wants me. But she said she wouldn't be able to turn to it to make notes and discuss what to do to get the book in shape for submission before the "both of June," a typo I spent weeks trying to guess at rather than just annoyingly ask her what she meant. I'd decided it would be best to assume 4th of July would be the soonest she'd be able to look at it. I got impatient, though, about 6/20 or so and did ask if it was possible we could discuss it by the 4th, since summer is my slow time at work and most ideal time to work on re-write. Ever since, we've been making appointments week by week to discuss, which every time she's had to break because she isn't ready.
Please tell me she isn't a flake, she just has a lot on her plate (she's the name agent at her firm), and I need to simply work on my second book while I'm waiting on her notes/edits. Would love, though, to hear from others who've lived through slow starts with their agents. Especially if the story ended happily.