ghash.io blocks with ?/120 got never reward?

[giletto]

What is that mean, if on ghash.io every 30-50 Blocks who are finished not get shown?

I mean it looks like they will not pay rewards to this blocks?

Code:

5747 	2014-01-03 21:16:01 	278484 	25.1505 	?/120 	2 hours 	3.82 Ph/s 	373760/5000011723 	0.01% 	4940805159 	-

here the link to the block: https://blockchain.info/block-index/00000000000000023822a955fbaac71efafb166b579848ba7bc8da39efa0dfa4

Or another one, same list, just few hour later:

Code:

5790 	2014-01-04 18:12:01 	278608 	25.0991 	?/120 	27 minutes 	4.08 Ph/s 	1071104/5000015466 	0.02% 	1566196934 	-

Link to the block: https://blockchain.info/block-index/0000000000000000745842f78b135f67518a3beeaccb3b88493abd53d97fde31

In the new list are only this 2, but sometime are in 1 list 3 or 4. What is that mean? The blocks are solved, but no reward will shared?

[CYPER]

Orphaned blocks: https://blockchain.info/block-index/0000000000000000745842f78b135f67518a3beeaccb3b88493abd53d97fde31

[giletto]

Ah i see, thank you.