I've got an odd situation.
I'll see it using 5-15% instead.
AikensLaughs.com.       2D IN NS        NS2.YOURLASTHOST.com.
AikensLaughs.com.       2D IN NS        NS1.YOURLASTHOST.com.
the problem goes away for a couple hours.
appears to make the problem go away.
8.3.0, but I wasn't watching things as closely then, either..
seems to find some problems.
If I've not explained things well enough, let me know.