I've updated both machines in my signature today from AIS 7.0.1474 to AIS 7.0.1482 via the AvastUI. On both machines, it imported my settings and registration. I've done Quick and Full scans (Win7 Full scan in progress now). All went well, along with browsing and other internet programs. If anything, AIS 8 seems faster than AIS7 on browsing. I'm still getting used to the new interface; finding out where some of the items have been moved. To be fair, I'll withhold judgement on the interface changes until I've totally (Is that possible?) familiarized myself. Sometimes, though, I just have to ask myself why there. It is what it is.
Overall, and especially with all the changes, Good Job, Avast.