Aptitude has locking problem on cache file -- cannot upgrade to latest sarge.
Yesterday (2004 jan 12) , when I tried to upgrade to the latest sarge,
it spend a marry 23 minutes downloading all the changes, but when I got
around to telling it to go ahead and install, all it did was give me the
W: Warning: could not lock the cache file. Opening in read-only mode
I press return to say "OK" (though everything ie evidently not OK), and
it doesn't do any installations or upgrades.
How do I get out of this wedged state?