Have you got limescale blocking your passages, or at least the
toilet's? If a flake gets wedged in the system near an exit point for
the water it can cause turbulence in the stream that might cause that
sort of thing.

On Mon, 09 Sep 2013 11:26:57 -0500, "Local hero"
wrote:

My WC has started behaving oddly. When I flush, the water jet from
around the rim starts climbing back upwards and spills and spatters
around the top of the rim and the toilet seat. Any ideas on what would
cause this?
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