We are running 2.0.2 with 2 8.4 nodes and 1 8.3 node.  We had to apply
patches for 2 issues which reportedly have been fixed in 2.0.3.  The issues
were not related to locking.  One was about vacuuming -- a slony function
was trying to query pg_autovacuum, which is gone in 8.4.  The other was a
bug in the C code, see 
http://www.nabble.com/How-to-downgrade-from-2.0.2-to-2.0.1-tc24540512.html
this thread , and that bug was also in 2.0.1.  

We've been live now for about a month with no further problems.

-Gordon


Karl Denninger wrote:
> 
> I am attempting to migrate over to 8.4 using Slony, and am getting some
> odd errors relating to locking problems.
> 
> Is Slony (2.0.2) supposed to work with Postgresql 8.4 or am I ahead of
> the Slony developers? :)
> 

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