Size mismatch on install...

[guriboy]

I apologize in advance for the long scroll...

When I try to install Plesk on Ubuntu 5.10, I get the following errors.

Failed to fetch http://autoinstall.plesk.com/ubuntu...ap_3.0.8-ubuntu5.10.build80060331.13_i386.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu...dd_8.0.0-ubuntu5.10.build80060331.13_i386.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu...pi_8.0.0-ubuntu5.10.build80060413.08_i386.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu...a-autoinstaller_3.0.2-build060427.11_i386.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu...tor_1.0.0-ubuntu5.10.build80060331.13_all.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu...sa_8.0.0-ubuntu5.10.build80060425.18_i386.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu...sk_8.0.0-ubuntu5.10.build80060331.13_i386.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu...pc_8.0.0-ubuntu5.10.build80060413.08_i386.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu...386//opt/modules/atis/psa-atis_1.0-21_all.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu...f2_1.0.0-ubuntu5.10.build80060331.13_i386.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu...0.3.5rc2-ubuntu5.10.build80060331.13_i386.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu...er_8.0.0-ubuntu5.10.build80060413.08_i386.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu...i386//opt/sitebuilder/psa-sbm2_1.1-11_all.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu...i386//opt/drweb/drweb-base_4.33-5psa_i386.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu...6//opt/drweb/drweb-updater_4.33-3psa_i386.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu...86//opt/drweb/drweb-daemon_4.33-5psa_i386.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu...u-5.10-i386//libtomcat4-java_4.1.31-3_all.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu...ppwse_1.1-ubuntu5.10.build80060418.13_all.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu...der-core_2.1.3-ubn510.build060414.17_i386.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu...ebuilder_2.1.3-ubn510.build060414.17_i386.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu...-blogger_2.1.3-ubn510.build060414.17_i386.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu...-counter_2.1.3-ubn510.build060414.17_i386.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu...feedback_2.1.3-ubn510.build060414.17_i386.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu...le-forum_2.1.3-ubn510.build060414.17_i386.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu...uestbook_2.1.3-ubn510.build060414.17_i386.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu...le-photo_2.1.3-ubn510.build060414.17_i386.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu...ssreader_2.1.3-ubn510.build060414.17_i386.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu...e-script_2.1.3-ubn510.build060414.17_i386.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu...bmission_2.1.3-ubn510.build060414.17_i386.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu...ule-shop_2.1.3-ubn510.build060414.17_i386.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu...atistics_2.1.3-ubn510.build060414.17_i386.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu...le-votes_2.1.3-ubn510.build060414.17_i386.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu...te-admin_2.1.3-ubn510.build060414.17_i386.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu...eb-Ubuntu-5.10-i386//tomcat4_4.1.31-3_all.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu...ntu-5.10-i386//tomcat4-admin_4.1.31-3_all.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu...u-5.10-i386//tomcat4-webapps_4.1.31-3_all.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu...ail_4.33-ubuntu5.10.build80060331.13_i386.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu...page_5.0-ubuntu5.10.build80060331.13_i386.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu...erl_2.59-ubuntu5.10.build80060331.13_i386.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu...t/psa-appvault-advancedpoll_2.03-8014_all.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu...ult/psa-appvault-autoindex_1.5.3-8013_all.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu...sa-appvault-b2evolution_0.9.0.12-8012_all.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu.../vault/psa-appvault-bbclone_0.48-8012_all.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu...lt/psa-appvault-coppermine_1.3.3-8028_all.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu...t/vault/psa-appvault-cslh_2.12.2-8012_all.deb Size mismatch
Failed to fetch http://autoinstall.plesk.com/ubuntu...t/vault/psa-appvault-docfaq_1.71-8017_all.deb Size mismatch
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?

Being somewhat of a noob, I don't know how to proceed. Any help would be greatly appreciated! Thanks!