Fun watching the debug log as the blocks come in.  Looks like there is 1 or 2 a second.  Also seeing lots of long block chain re-orgs:

REORGANIZE: Disconnect 6 blocks; 42f941a6031dc3b41af2..cc03f278f04afbde208a
REORGANIZE: Connect 7 blocks; 42f941a6031dc3b41af2..0c8845a4d9d15e7a7507

REORGANIZE: Disconnect 5 blocks; 42f941a6031dc3b41af2..40341ca5c6965be3481e
REORGANIZE: Connect 6 blocks; 42f941a6031dc3b41af2..cc03f278f04afbde208a

REORGANIZE: Disconnect 4 blocks; 42f941a6031dc3b41af2..4acdf17c62282444c8f8
REORGANIZE: Connect 5 blocks; 42f941a6031dc3b41af2..40341ca5c6965be3481e

And the longest I've seen:
REORGANIZE: Disconnect 13 blocks; f243992c9eda69cee1e7..71117064476dd175253f
REORGANIZE: Connect 14 blocks; f243992c9eda69cee1e7..311620c256d3b658ff55

and

REORGANIZE: Disconnect 15 blocks; 651da75d037edf65f818..6788c730fb52a72f2a41
REORGANIZE: Connect 16 blocks; 651da75d037edf65f818..c9039814ed1318c2e2ce