strange in error.log

["stalker@xxxxxxxx" <stalker@xxxxxxxx>]

some time i see in  error.log

==

[Thu Oct 13 14:04:00 2011] [error] False
[Thu Oct 13 14:04:00 2011] [error] False
[Thu Oct 13 14:04:00 2011] [error] False
[Thu Oct 13 14:04:00 2011] [error] True
[Thu Oct 13 14:04:00 2011] [error] True
[Thu Oct 13 14:04:00 2011] [error] True
[Thu Oct 13 14:04:00 2011] [error] False
[Thu Oct 13 14:04:00 2011] [error] False
[Thu Oct 13 14:04:00 2011] [error] False
[Thu Oct 13 14:04:00 2011] [error] False
[Thu Oct 13 14:04:00 2011] [error] False

how to fit it ?