ClamWin Definitions Doubling Up

Has anyone noticed that there's something odd about ClamWin updates for the past couple days — that the definitions are downloading in duplicate? Seems like this would make for a pretty darn big daily.cld pronto. Here's my latest clamav report:

ClamAV update process started at Wed Nov 25 19:15:24 2009
main.cvd is up to date (version: 51, sigs: 545035, f-level: 42, builder: sven)
Downloading daily-10070.cdiff [100%]
Downloading daily-10070.cdiff [100%]
Downloading daily-10071.cdiff [100%]
Downloading daily-10071.cdiff [100%]
Downloading daily-10072.cdiff [100%]
Downloading daily-10072.cdiff [100%]
Downloading daily-10073.cdiff [100%]
Downloading daily-10073.cdiff [100%]
daily.cld updated (version: 10073, sigs: 114254, f-level: 44, builder: ccordes)
Database updated (659289 signatures) from database.clamav.net (IP: 207.57.106.31)

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Completed
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I realize this isn't a PA issue but I was wondering if anybody here has any insight into the why of it.