Upgrade problem to 3.5.13

Hi! I've just tried to upgrade my squeeze box from TDE 3.5.12 to 3.5.13, but it failes because some packages are missing. # LANG=en apt-get upgrade Reading package lists... Done Building dependency tree Reading state information... Done The following packages have been kept back: blender gcc-4.6-base gir1.2-gdkpixbuf-2.0 libdb5.1 libdrm-intel1 libdrm-radeon1 libdrm2 libgail-common libgail-dev libgail18 libgcc1 libgcrypt11 libgdk-pixbuf2.0-0 libgdk-pixbuf2.0-dev libgfortran3 libglib2.0-0 libglib2.0-bin libglib2.0-dev libgnutls26 libgomp1 libgtk2.0-0 libgtk2.0-bin libgtk2.0-dev libltdl-dev libltdl7 libmp3lame0 libpcre3 librsvg2-2 librsvg2-common libssl1.0.0 libstdc++6 libxvidcore4 mencoder mplayer sshuttle The following packages will be upgraded: k3b-data-trinity k3b-trinity k9copy-trinity kde-i18n-de-trinity libk3b3-trinity 5 upgraded, 0 newly installed, 0 to remove and 35 not upgraded. Need to get 23.7 MB/30.0 MB of archives. After this operation, 545 kB of additional disk space will be used. Do you want to continue [Y/n]? Err http://ppa.quickbuild.pearsoncomputing.net/trinity/trinity-v3.5.13/debian/ squeeze/main k9copy-trinity i386 4:3.5.13-0debian9+r1258940+pr2~squeeze 404 Not Found Err http://ppa.quickbuild.pearsoncomputing.net/trinity/trinity-v3.5.13/debian/ squeeze/main kde-i18n-de-trinity all 4:3.5.13-0debian9+r1181027+pr1~squeeze 404 Not Found Failed to fetch http://ppa.quickbuild.pearsoncomputing.net/trinity/trinity-v3.5.13/debian/p… 404 Not Found Failed to fetch http://ppa.quickbuild.pearsoncomputing.net/trinity/trinity-v3.5.13/debian/p… 404 Not Found E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing? -- Mag. Dr. Nikolaus Klepp Einnehmerstraße 14 A-4810 Gmunden Tel.: +43 650 82 11 724 email: office(a)klepp.biz