Yet another flap

Hi
have one server which keeps flapping on msgs. Spent hours to look for the
obvious culprit (another feeder) until it dawn on me that it must be the
logfetch, since there are no issues with other columns.
And indeed, after running logfetch with --debug=stderr, I discovered that
it is not always running - I mean not triggered at all - which triggered
the flapping status.
I dug here and there, to no avail. Any bright ideas are welcome..
Cheers
Ron