[thelist] Widget caching problem?

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Hi,

I have a strange problem that I can't quite figure out with a Mac
widget I'm developing.

I'm still just in development mode stitching it together on my
machine, but this is not the first one I've done.

The basic problem is that new versions of the widget I install don't
seem to be over-writing the older versions completely.  The HTML and
CSS seem to update, but, what's really strange, is that the widget
seems to be caching the old version of the XML file.

I can verify that the XML file is new/updated on my website by calling
it through a browser.  All the new data is in place.  But, either when
I install a new version of my widget because I made some minor
changes, or when the widget tries to refresh the data, it's still
seeing the old file.  What really drives me nuts is that the old file
doesn't exist anywhere on the website.  It has to be seeing it
locally, but I can't find it anywhere.

Has anyone else run into this problem?  Anyone have some advice?

Thanks,
Matt