bitcoin/bitcoin — pull request #1114 by sipa (2012-04-17 16:29:28+00:00)
Title: Reduce sync frequency for blkindex.dat

Since auto-remove-db-logs was enabled, each time a CTxDB was closed
outside of the initial download window, it causes a checkpoint + log
cleanup. This is overkill, so reduce the sync frequency to once per
minute at most.