update-manager freezes mid-term in xubuntu upgrade to edgy

Daniel, can you *PLEASE* be a little more careful when marking bugs as dupes? How can you be sure that this is the same bug as 68027? Just because the effects seem to be similar? Give me a break. If you are so sure this is a dupe, you can surely tell me what the root cause of this problem is? If not, please be more careful in bug triaging or just refrain from it altogether, OK? I think it would also be nice to give a least a short comment as to why you think a bug is a dupe.

Now, I guess nobody knows what is causing this yet. I found that in my case it seems like uim-anthy hung the upgrade. At least that package is giving me big headaches now. I found that out since I was getting messages that uim-common has problems and should be reinstalled. In the end I tried to deal with them by just removing the package and its dependencies temporarily. Here is the console output. Maybe somebody can make something out of it.

# dpkg -r uim-anthy
(Reading database ... 120261 files and directories currently installed.)
Removing uim-anthy ...
ERROR: unbound variable (errobj is-set-ugid?)

*backtrace*
>>(is-set-ugid?)
>>(if (is-set-ugid?) (list (string-append (sys-pkglibdir) "/plugin")) (filter string? (append (list (getenv "LIBUIM_PLUGIN_LIB_DIR") (string-append (getenv "HOME") "/.uim.d/plugin") (string-append (sys-pkglibdir) "/plugin")) (if (getenv "LD_LIBRARY_PATH") (string-split (getenv "LD_LIBRARY_PATH") ":") ()))))
>>(define uim-plugin-lib-load-path (if (is-set-ugid?) (list (string-append (sys-pkglibdir) "/plugin")) (filter string? (append (list (getenv "LIBUIM_PLUGIN_LIB_DIR") (string-append (getenv "HOME") "/.uim.d/plugin") (string-append (sys-pkglibdir) "/plugin")) (if (getenv "LD_LIBRARY_PATH") (string-split (getenv "LD_LIBRARY_PATH") ":") ())))))
>>(require "plugin.scm")
>>(require "init.scm")
>>(*catch (quote errobj) (require "init.scm"))
>>(eq? (quote *init.scm-loaded*) (*catch (quote errobj) (require "init.scm")))

ERROR: unbound variable (errobj custom-reload-customs)

ERROR: unbound variable (errobj custom-choice-rec-sym)

ERROR: unbound variable (errobj plugin-alist)

ERROR: wta to car (errobj t)

Thanks to Daniel's support I made the following progress:

- removed an old entry from /etc/apt/preferences pinning edgy to 100

Daniel has come to the conclusion this does not even constitute a bug in update-manager but that it is another bug in uim which just brings update-manager to a halt. He told me in IRC that bug has been fixed in uim 1:1.2.1-4

I will attach some output that I used when communicating with Daniel to troubleshoot the situation. Maybe this will be useful.

same thing happened again today with the upgrade of my laptop. If this is fixed in uim in the latest version, why did I see this again?