I've been able to reproduce this problem with 0.5.5. FinkCommander keeps a cache under /Users/username/Library/Application Support/FinkCommander/infocache. After a Fink operation, FinkCommander compares infocache's timestamp with Fink's and only updates the package catalog if infocache is older than Fink's last update. For some reason this comparison is not working so FinkCommander never...