A very nice chapter.
I've learned not to be impatient, especially with my manga. Sure, I'd love to see a big arc, but the author wants to create a slow-paced story, so why not let him? I actually really like it when a chapter ends with... Ends like chapter 341. My favourite so far, I think, it's really memorable.
I also expected Maria to catch Hayate in the act or for Hayate to get misunderstood for a stalker... And who knew Hayate remembered Maria's real age. Though I guess after having been threatened like that whenever he implied she's older, anybody would remember.