Migrating the db from schema rev 6 to 7 (1.7.2 to 1.7.2) took 3:20 minutes of "nothing" from a user POV.
Yes, the DB is somewhat large (~90MB), the computer not that fast (2GHz) , the disk usually slow but perhaps a UI notice or something like that is in order.
2009-11-19 10:58:22 UTC in Liferea