The logs show many orphan blocks showing up recently.  (Log excerpt in GMTime follows).

07/10/13 13:44:59 received block bb8de9716c21d63474da
07/10/13 13:44:59 ProcessBlock: ORPHAN BLOCK, prev=adfede5ecbc220207348
07/10/13 13:44:59 received block 9350034b0ef4acbd3e1e
07/10/13 13:44:59 ProcessBlock: ORPHAN BLOCK, prev=bb8de9716c21d63474da
07/10/13 13:44:59 received block db32f9bbe3603114d572
07/10/13 13:44:59 ProcessBlock: ORPHAN BLOCK, prev=9350034b0ef4acbd3e1e
07/10/13 13:44:59 received block 15081ae1e33a41bbfa2c
07/10/13 13:44:59 ProcessBlock: ORPHAN BLOCK, prev=db32f9bbe3603114d572
07/10/13 13:44:59 received block 0eb7258ad053301cba82
07/10/13 13:44:59 ProcessBlock: ORPHAN BLOCK, prev=15081ae1e33a41bbfa2c
07/10/13 13:44:59 received block 77fa54894bd89aa84390
07/10/13 13:44:59 ProcessBlock: ORPHAN BLOCK, prev=0eb7258ad053301cba82
07/10/13 13:44:59 received block f4f2c60f661b33206a49
07/10/13 13:44:59 ProcessBlock: ORPHAN BLOCK, prev=77fa54894bd89aa84390
07/10/13 13:44:59 received block 398601a33baae11914e5
07/10/13 13:44:59 ProcessBlock: ORPHAN BLOCK, prev=f4f2c60f661b33206a49
07/10/13 13:44:59 received block cdeddd3196901fe35faa
07/10/13 13:44:59 ProcessBlock: ORPHAN BLOCK, prev=398601a33baae11914e5
07/10/13 13:44:59 received block 69dbefef0a90229b95cf
07/10/13 13:44:59 ProcessBlock: ORPHAN BLOCK, prev=cdeddd3196901fe35faa
07/10/13 13:44:59 received block 5c0431388c2e5649ef9e
07/10/13 13:44:59 ProcessBlock: ORPHAN BLOCK, prev=69dbefef0a90229b95cf
07/10/13 13:44:59 received block 07966a77107ff5aa749b
07/10/13 13:44:59 ProcessBlock: ORPHAN BLOCK, prev=5c0431388c2e5649ef9e
07/10/13 13:44:59 received block 7eaddcdb95b11d60fc60
07/10/13 13:44:59 ProcessBlock: ORPHAN BLOCK, prev=07966a77107ff5aa749b
07/10/13 13:44:59 received block f92ea85c0ef871992c30
07/10/13 13:44:59 ProcessBlock: ORPHAN BLOCK, prev=7eaddcdb95b11d60fc60
07/10/13 13:44:59 received block 6ff362d710d1f8e6edb2
07/10/13 13:44:59 ProcessBlock: ORPHAN BLOCK, prev=f92ea85c0ef871992c30