Normal Filter Problems

[cset16]

I am now having trouble with the normal filter.  I have it set up as follows:

Not Contains, Text, ?, Ignore.

I attached what the screen showed and what the filter actually produced.  The filter seems to have ignored the first two events completely and only recorded the third.  I have no idea what I am doing wrong   ...  Please help

After trying several times, it seems as though when I have more than 4 stable points (ones without ? which are supposed to be filtered, the filter then only logs the most recent cluster of unstable points (points with ?).

Thanks!