I too have run into the original posted problem - a few days ago I noticed that I only had one destination available for installations, where I was sure there had previously been several.
Then the following day there are NO destinations, NO packages available, NO packages listed as installed.
ipkg from command line is helpless as well.
Turns out that /etc/ipkg.conf is empty... Don't know how it managed that, but if someone could post ipkg.conf from r121 I'd really appreciate it...
j