How long before matches turn up on Ancestry

[LizzieL]

I check for new matches on Ancestry once or twice a week. Today I had a new match (M)who also shared with my father's first cousin (C) and one other person (J) who I haven't identified the link with yet. I already knew that J shared matches with C and C's daughter.
M hasn't got a tree, but as I haven't any other matches from this branch (as far as I know), I wanted to find out more about M. I checked her profile and found she last signed in 3 - 11 months ago. She joined Ancestry in 2013.
I always though matches would show up within a few days of the results being available to the tester, but it either looks like they take a lot longer than this.

[mgeneas]

Perhaps the last log in was to purchase the dna kit. And the person has not yet logged in to see the results.

[LizzieL]

They would have had to have registered it when they received it, but I suppose there could have been a 3 month delay if they didn't actually do the test and send it off for processing until 6 - 8 weeks or so after registration