Is the Jan 27 version of Packages.gz for potato/main safe?

[Eric Hanchrow <offby1@blarg.net>]

I've been upgrading my potato installation about every day for months,
and usually only a few packages get upgraded.  But earlier today, I
started my usual upgrade process, and pulled down the latest
Packages.gz file for potato/main, and (I use dselect) noticed that
many (thirty or more?) of my installed packages were now marked for
removal.  I was afraid to continue with the process, so I didn't ask
dselect to do the installation.

Is there something actually wrong with that Packages file, or am I
just being paranoid?

Thanks