Long time to synch

I upgraded to 2.0b7.5 on 2 computers this evening. I had the syncing problems discussed on this forum, but they have resolved.
All is good except for one thing. One computer syncs quickly and easily, just like before the upgrade. The other, however, takes a long time to sync (around a minute each time, as compared to a few seconds on the other computer).
Is there a reason for this? Both computers are on the same network and using the same internet connection.
This discussion has been closed.