<< Stuff like this bugs me... it has been this way for 10 years, now it is wrong. >>
While it's possible that something changed in a recent R:Base release, it's also possible that you recently exceeded some magic number of records in the table which forces R:Base to perform the SELECT used in the rule in a temp file instead of in memory. If that's the case, the rule would suddenly slow down substantially for each of the 100,000 executions necessary in reloading the table. -- Larry
