Andrew Sullivan wrote:

>On Mon, Mar 06, 2006 at 10:52:52AM -0500, Christopher Browne wrote:
>  
>
>>It is uncertain whether you would experience the same thing.  The
>>problem isn't with Slony-I, per se; it is that there is no mechanism for
>>invalidating the old query plans.
>>    
>>
>
>I seem to remember Tom Lane suggesting one time that the functions
>_ought_ to provide a mechanism for invalidating those plans.  Of
>course, I don't know how such a thing would work.
>  
>
It's a more general issue, as this applies to pretty well anything, not
merely Slony-I...

At one point, Neil Conway said he was going to be looking at the issue;
I am not certain that this is yet under way for 8.2; it obviously didn't
happen for 8.1...