Thanks for your report.
The crash is caused by a conflicting files between acroread and
adobereader-ita. Please remove adobereader-ita before upgrading to acroread.
However, adobereader-ita is not provided by the official Ubuntu repositories.
Because of this the Ubuntu project can not support
** Attachment added: "Dmesg.txt"
http://launchpadlibrarian.net/36917880/Dmesg.txt
** Attachment added: "DpkgTerminalLog.txt"
http://launchpadlibrarian.net/36917881/DpkgTerminalLog.txt
** Attachment added: "XsessionErrors.txt"
http://launchpadlibrarian.net/36917882/XsessionErrors.txt
--
