Here is the statistics from the completed task:

Froogle Data Feeder v.1.3.3 07.02.2007 20:45 started 2007/03/20 20:03:58
Feed file - DELETED FOR SECURITY REASON
Processing: Feed - Yes, Upload - No
Froogle File Complete In 123.431367 Seconds 10043 Records

As you can see it took 123.43 seconds to generate the file. If I would have set my limit to less than 124 this wouldn't have worked.