I don't know if this is a problem related to the mix breezy/dapper. We found a problem in breezy (see bug #54351) and we decided to try un upgrade to dapper touching only these packages:
busybox-initramfs_1.01-4ubuntu3_i386.deb initramfs-tools_0.40ubuntu32_all.deb klibc-utils_1.1.16-1ubuntu5_i386.deb libcairo2_1.0.4-0ubuntu1_i386.deb libfreetype6_2.1.10-1ubuntu2.2_i386.deb libglib2.0-0_2.10.3-0ubuntu1_i386.deb libklibc_1.1.16-1ubuntu5_i386.deb libpango1.0-0_1.12.3-0ubuntu3_i386.deb libpango1.0-common_1.12.3-0ubuntu3_i386.deb linux-image-2.6.15-26-686_2.6.15-26.46_i386.deb lsb-base_3.1-5ubuntu2_all.deb module-init-tools_3.2.2-1ubuntu7_i386.deb nbd-client_2.8.3-2_i386.deb nbd-server_2.8.3-2_i386.deb -- cannot load aic7xxx module https://launchpad.net/bugs/59163 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs