Haven't Seen This One Before

After finally getting through to get some tasks allocated, about half of the 100 tasks errored out as soon as the download completed. They didn't even get to the GPU's.

The error message was
13/01/2013 2:52:28 PM SETI@home [error] 29jn12ae.30290.15971.13.10.39_1: negative FLOPs left -2.000000
13/01/2013 2:52:28 PM SETI@home [error] 29jn12ae.30290.15971.13.10.33_1: negative FLOPs left -2.000000
13/01/2013 2:52:28 PM SETI@home [error] 29jn12ae.30290.15971.13.10.255_0: negative FLOPs left -2.000000
13/01/2013 2:52:28 PM SETI@home [error] 29jn12ae.30290.15971.13.10.253_0: negative FLOPs left -2.000000
13/01/2013 2:52:28 PM SETI@home [error] 29jn12ae.30290.15971.13.10.252_0: negative FLOPs left -2.000000

Anyone else seeing this and what does it mean ?

EDIT: 20 of the tasks that failed this way have just been successfully resent.

T.A.