SP downloading and xmldsig-validating remote XML metadata on every start

[Cantor, Scott]

My recollection is that the only impact of the setting is to the perceived startup time. I believe it always attempts to fetch the remote copy, and the log would reflect that (and it seems to, since the long validation interval is preceded by that).

However, at startup the foregrounded init process loads the backup file and would omit the signature check. The background refresh thread would immediately be started and would be doing work (and tying up lots of CPU), it just shouldn't prevent the overall startup sequence from finishing or handling requests as long as it has the cycles.

-- Scott