2 blocks in there with no transactions ...............

Edit:
For those 2 blocks (348622 and 348756) in both cases there was more than 70k of available transactions in default bitcoind (0.9.3)

2015-03-21 22:59:34 CreateNewBlock(): total size 74227
2015-03-21 22:59:55 UpdateTip: new best=0000000000000000026dc4816fafc56319188636f25a8db4b5dd45523ee8cc9d  height=348622 log2_work=82.473041  tx=63093470  date=2015-03-21 22:59:27 progress=0.999999
2015-03-21 22:59:55 SetBestChain: 17 of last 100 blocks above version 2
2015-03-21 22:59:55 ProcessBlock: ACCEPTED
2015-03-21 22:59:56 CreateNewBlock(): total size 86577

2015-03-22 22:15:36 CreateNewBlock(): total size 76340
2015-03-22 22:15:51 UpdateTip: new best=000000000000000007cbae22fa32e5242a35852a79711ff4247803e246604030  height=348756 log2_work=82.478896  tx=63178504  date=2015-03-22 22:15:29 progress=1.000000
2015-03-22 22:15:51 SetBestChain: 16 of last 100 blocks above version 2
2015-03-22 22:15:51 ProcessBlock: ACCEPTED
2015-03-22 22:15:52 CreateNewBlock(): total size 85285