[pluggo] Clearing audio buffers

I'm wondering if other plugin developers have an easy solution for this problem.

In Logic (7, 8, and Express), whenever I have audio going into a plugin, and stop the transport before the region is done, move the transport to another location without audio and restart, I get the previous audio buffer (something like 100 ms) continuing to loop. I'm guessing this is pluggo's audio buffer, since it doesn't involve any buffer~ objects in the plugin.

The only way to clear this loop is to allow the audio region to play through to its end, thereby emptying its audio buffers.

This wasn't too big a deal with only one plugin, but when I have multiple tracks with plugins and overlapping audio, I'm always ending up with this nagging problem.

So, am I missing a simple solution to automatically clear the audio buffers when the transport starts?

Mac 10.4.10 (but occurred on previous versions)
Logic 7, 8, Express
MacBook Pro (but occurs on any machine)
4GB ram