Possible bug in ActiveRecord::Base#to_xml and caching

So I’ve got this weird problem showing up in the production environment
to
where when I grab xml from resources, the xml results get cached, but
not
used. This means that every subsequent request appends the results to
the
cache.

This happens when config.cache_class = true; happens in both WEBrick and
my
Apache2 fastcgi deploy.

And an example run:

C:\Development\AdminPortal\proto>wget
http://localhost:3000/phone_carriers.xml

09:21:34 (869.14 KB/s) - `phone_carriers.xml’ saved [890/890]

C:\Development\AdminPortal\proto>wget
http://localhost:3000/phone_carriers.xml

09:21:35 (1.70 MB/s) - `phone_carriers.xml.1’ saved [1780/1780]

C:\Development\AdminPortal\proto>wget
http://localhost:3000/phone_carriers.xml

09:21:36 (2.55 MB/s) - `phone_carriers.xml.2’ saved [2670/2670]

As you can see, the exact same request returns increasingly larger
results.
There are only 5 records being returned here, but the 2nd request gives
me
the results twice, and the third request gives me the results a third
time:

<?xml version="1.0" encoding="UTF-8"?> ... <?xml version="1.0" encoding="UTF-8"?> ... <?xml version="1.0" encoding="UTF-8"?> ...

I’m currently looking into the problem, but was wondering if anyone here
had
run into this or has an idea on where to look. I can’t find anything via
Google or on the Trac.

My environment:

Ruby version 1.8.6 (i386-mswin32)
RubyGems version 0.9.2
Rails version 1.2.0
Active Record version 1.14.4
Action Pack version 1.12.5
Action Web Service version 1.1.6
Action Mailer version 1.2.5
Active Support version 1.3.1
Edge Rails revision 6494
Application root C:/Development/AdminPortal
Environment development
Database adapter mysql

Thanks.

Jason