DD was like that from 11-2 every. single. night.
I had to much foremilk for her, and she was a premie with high needs. We now know she is also alergic to wheat.
DS is much better, although, he is only 1 month and HIS fussy period (although, nothing could compare to the screams of DD) is 11am - 1pm. over the lunch hour Which - is much more convient, and hopefully when I return to work he won't switch to nights.
With DD we turned on the "snow" on the tv, but, now we havbe a tv that just says "no signal....." Perhaps some white noise?