SiteBuilder update FAILS

[Hal9000]

Hi! I have Plesk 8.0.1 on Debian 3.1, and now there are two updated packages that update sitebuilder from 3.0.0 to 3.0.1, but when trying to install them the updater fails:

Download file versions.inf3: 30%..100% done
Download file PSA_8.0.1/plesk-8.0.1-deb3.1-i386.inf3: 100% done
Checking for system installed packages...done.
Check for components installation status
resolve packages with apt-get
Hit [...]
Hit [url]http://autoinstall.plesk.com[/url] PSA_8.0.1/ Packages
Ign [url]http://autoinstall.plesk.com[/url] PSA_8.0.1/ Release
Reading Package Lists...
ERROR: apt-get can't resolve selected packages.


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Plesk autoinstaller.

any ideas?