Small bug: upon upgrading to the new version (V2.73b), the time NEI takes to update it's list when searching for items gets a delay of 2~5 seconds. Last version i tried without that bug: 2.70d.
Using NEI 1.4.4.0 & CCC 0.7.0.0 & forge483.
I have investigated in that already. I don't know why this is happening, but removing the Plugin doesnt solve it, so I dont know how to fix it.