BasKet reached its milestone 1.0 release today. It fixes a number of reported crashes and should be more stable than previous versions. Kontact integration for KDE 3.5.6 now works as well. There are also many useability improvements.
Some notable feature additions are: the ability to export baskets as archives and open them on another computer; easy import from text files; the ability to customize the directory where baskets are stored; and easy backup and restore.
The full changelist can be viewed here.