Yes, I know there are two updaters. First one, auto-updater (uks) and the second, manual, which should be working.
Hovever, un-ability to install/uninstall update packages (bin) was connected with uks. Or maybe I dont understand something?
From your posts, you **HAD** to have done more than you claimed to the device.
1. Long time ago I probably changed name (maybe not manually, but by some hack) uks to uks.disabled . And couldnt install packages since that moment.
2. I removed /mnt/us contents
3. I was afraid, because I didnt had launchpad and myts (which I use a lot), and couldnt install it. I knew that i couldnt install/uninstall anything.
Now the solution:
1. Rename uks.disabled to uks
2. Uninstall JB, UN, LP
3. Install them again.
Everything is now working correctly.