Psyco tagging the same function multiple times

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I'm trying some stuff with Psyco and am confused about its apparent desire
to compile the same function (or method) multiple times).  Here's an
abstract from a recent run:

    12:45:15.99  tag function: __main__.Watcher.processUpdate        %
    12:45:24.95  tag function: __main__.Watcher.processUpdate        %
    12:45:55.12  tag function: __main__.Watcher.processUpdate        %
    12:46:12.29  tag function: __main__.Watcher.processUpdate        %
    12:46:28.09  tag function: __main__.Watcher.processUpdate        %
    12:47:05.32  tag function: __main__.Watcher.processUpdate        %
    12:47:48.62  tag function: __main__.Watcher.processUpdate        %
    12:48:09.63  tag function: __main__.Watcher.processUpdate        %
    12:48:43.20  tag function: __main__.Watcher.processUpdate        %
    12:49:58.80  tag function: __main__.Watcher.processUpdate        %
    12:50:32.20  tag function: __main__.Watcher.processUpdate        %
    12:51:07.91  tag function: __main__.Watcher.processUpdate        %
    12:52:17.14  tag function: __main__.Watcher.processUpdate        %
    12:52:33.67  tag function: __main__.Watcher.processUpdate        %

What (if anything) does it mean that it tagged Watcher.processUpdate more
than once?

Thanks,

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