Why did I not get a reward for almost 3 hours of mining?

[mvanzeelt]

#   Block found at   Duration   Total shares   Your shares   Your BTC reward   Block #   Block value   Validity
21196   2013-12-17 17:26:13   0:20:08   135820942   261   0.00004748   275458   25.15992959    98 confirmations left
21195   2013-12-17 17:06:05   0:29:11   195978522   407   0.00004612   275456   25.14922486    96 confirmations left
21194   2013-12-17 16:36:54   2:45:39   1113515495   none   none   275451   25.15237446    91 confirmations left
21193   2013-12-17 13:51:15   1:15:05   505596336   1051   0.00004846   275427   25.08054735    67 confirmations left
21192   2013-12-17 12:36:10   2:42:03   1095064736   2415   0.00005609   275417   25.04087200    57 confirmations left
21191   2013-12-17 09:54:07   2:08:59   878305845   1796   0.00005320   275397   25.05802009    37 confirmations left
21190   2013-12-17 07:45:08   0:43:26   295448511   625   0.00005662   275382   25.00924742    22 confirmations left

My miners have been operational the entire time.

[ajax3592]

More information can certainly help us tackle your issue. Like what coin are you mining, what is your hardware, how many hashes are you getting out of it.

[mvanzeelt]

On one computer, I am using 2 ASIC erupter blocks at 666 Ghash, plus the cpu, at 1 Ghash, plus the video card at 30 Ghash.  On another computer, I am using 1 ASIC erupter block, 333 Ghash, and on a third computer, I am using the video card at 10 Ghash.  All miners were working before this, and after. 

Also, on the main forum page, I saw several other people having the same problem on the same block.

[reactive4ce]

#   Block found at   Duration   Total shares   Your shares   Your BTC reward   Block #   Block value   Validity
21196   2013-12-17 17:26:13   0:20:08   135820942   261   0.00004748   275458   25.15992959    98 confirmations left
21195   2013-12-17 17:06:05   0:29:11   195978522   407   0.00004612   275456   25.14922486    96 confirmations left
21194   2013-12-17 16:36:54   2:45:39   1113515495   none   none   275451   25.15237446    91 confirmations left
21193   2013-12-17 13:51:15   1:15:05   505596336   1051   0.00004846   275427   25.08054735    67 confirmations left
21192   2013-12-17 12:36:10   2:42:03   1095064736   2415   0.00005609   275417   25.04087200    57 confirmations left
21191   2013-12-17 09:54:07   2:08:59   878305845   1796   0.00005320   275397   25.05802009    37 confirmations left
21190   2013-12-17 07:45:08   0:43:26   295448511   625   0.00005662   275382   25.00924742    22 confirmations left

My miners have been operational the entire time.

Seems as Slush pool, contact the owner, or use the main Slush pool thread at bitcointalk

[mjc]

On one computer, I am using 2 ASIC erupter blocks at 666 Ghash, plus the cpu, at 1 Ghash, plus the video card at 30 Ghash.  On another computer, I am using 1 ASIC erupter block, 333 Ghash, and on a third computer, I am using the video card at 10 Ghash.  All miners were working before this, and after.  

Also, on the main forum page, I saw several other people having the same problem on the same block.

Are you sure that you have not mistaken GHash for MHash?

I don't know of any CPU that can do 1 GH, or any GPU that can do 30 GH.  Also I believe the Erupters do 333 MHash.   If that is the case then you have less than 1 GH running.  I know with my 180 GH I"m mining about 0.1 BTC a day.  If you are mining 1 GH then you are likely not mining with enough hash power to have had found anything in the block you highlighted.

[Theyoungbrit]

I've only mined at 2 GH with slush and always got something. There's properly some reason behind it, i'd contact suport anyway.

[pugetfield]

Maybe the block you found was invalid and discarded?