Here's some of the debugging info... does "fail" mean it simply didn't find a suitable result that round, or that there's some issue?

2015-02-18 09:37:37

[STAKE] searching for staking opportunity:
2015-02-18 09:37:37 [STAKE] checking 2 output(s)
2015-02-18 09:37:37 [STAKE] check c186638669606cd9021accba7e869de4b492f8fd88f6b2521a887a1a018f5400:1   (0.00037299 CLAM)
2015-02-18 09:37:37
[STAKE] fail: hash a2659a05a7ecda7e4d8bf2ca7a1b72b92d6a62d8c3dcf515923e9fd6fd86a655
[STAKE]   > target        117158c07000000000000000000000000000000000000000000000000
2015-02-18 09:37:37 [STAKE] check c186638669606cd9021accba7e869de4b492f8fd88f6b2521a887a1a018f5400:2   (98.24 CLAM)
2015-02-18 09:37:37
[STAKE] fail: hash e87e1b115cf92df97624cefd872057718a3015219810186cec8449c8fada2475
[STAKE]   > target    4619f2d25f800000000000000000000000000000000000000000000000000
2015-02-18 09:37:37 stake took 0s
2015-02-18 09:37:53

[STAKE] searching for staking opportunity:
2015-02-18 09:37:53 [STAKE] checking 2 output(s)
2015-02-18 09:37:53 [STAKE] check c186638669606cd9021accba7e869de4b492f8fd88f6b2521a887a1a018f5400:1   (0.00037299 CLAM)
2015-02-18 09:37:53
[STAKE] fail: hash b279ff86a6e7716e1d1120cb33a783f2e2cb93c94932f8f24b13c73a24d4b4d1
[STAKE]   > target        117158c07000000000000000000000000000000000000000000000000
2015-02-18 09:37:53 [STAKE] check c186638669606cd9021accba7e869de4b492f8fd88f6b2521a887a1a018f5400:2   (98.24 CLAM)
2015-02-18 09:37:53
[STAKE] fail: hash 2b30a2c8de42083fd8e8856f9da54759efba100ccf35666d2b432b791793ac77
[STAKE]   > target    4619f2d25f800000000000000000000000000000000000000000000000000
2015-02-18 09:37:53 stake took 0s
2015-02-18 09:38:09

[STAKE] searching for staking opportunity:
2015-02-18 09:38:09 [STAKE] checking 2 output(s)
2015-02-18 09:38:09 [STAKE] check c186638669606cd9021accba7e869de4b492f8fd88f6b2521a887a1a018f5400:1   (0.00037299 CLAM)
2015-02-18 09:38:09
[STAKE] fail: hash ac53b692ddda2b4e41c09e93ccf3e9b10a26f878141d7b4337acdbfa2c7c962c
[STAKE]   > target        117158c07000000000000000000000000000000000000000000000000
2015-02-18 09:38:09 [STAKE] check c186638669606cd9021accba7e869de4b492f8fd88f6b2521a887a1a018f5400:2   (98.24 CLAM)
2015-02-18 09:38:09
[STAKE] fail: hash c9a81d2445def2d41130aed27593881720cc5278c9f7cf0ee1f4cfda32664fc7
[STAKE]   > target    4619f2d25f800000000000000000000000000000000000000000000000000
2015-02-18 09:38:09 stake took 0s


The only time it's showing PASS is when a network block arrives... I presume that's because the debug info is printed in AcceptBlock() (or whatever it's called).

2015-02-18 09:39:16
[STAKE] PASS: hash     1d2131bd79523c3b938f56a03e53c7a2284dacf34bc321ba20834a444811
[STAKE]  <= target     2dab2bf2f400000000000000000000000000000000000000000000000000
2015-02-18 09:39:16
[STAKE] PASS: hash     1d2131bd79523c3b938f56a03e53c7a2284dacf34bc321ba20834a444811
[STAKE]  <= target     2dab2bf2f400000000000000000000000000000000000000000000000000
2015-02-18 09:39:20 not tracking stake rewards yet
2015-02-18 09:39:20 SetBestChain: new best=f069b8fb12da5f94d275677c248ead85a656f197d22a2854b9bfaa7ed6909d78  height=345346  trust=14380133255292933361  blocktrust=146947369008225  date=02/18/15 09:39:12
2015-02-18 09:39:20 ProcessBlock: ACCEPTED