My update manager and error report programs were broken in Ubuntu 12.04, so i decided to remove 12.04 altogether and upgrade to 13.04. The error I am Getting is:
(process:8276): GLib_CRITICAL **:g_slice_set_config: assertion 'sys_page_size == 0' failed
The Internet at my house is unstable. So after several hours of something "installing", the Internet had to be reconnected. After a while longer, I opened up Ubuntu help, here, and the error showed up. The time count when I opened up the Internet was at about 14 hours into "installation."
I have no idea what to do.
PS. I am downloading from a disk, not update manager.
Solved: I quit the upgrade, then opened ubuntu as a temporary os, copied the home folder off, most of the files anyway, and completely reinstalled. Works now.