Can't reproduce the indicator issue, but there's always a lot of discrepancy between Flash player/browsers versions that can bring little bugs.

As for the speed... in "perceived" loading speed of a properly configured site/server you wouldn't notice that much of a difference. Main gains are on server-load site for large member databases. Thus, for example 500 online members would experience similar performance with 7.0.3 as 100 online members experienced with 7.0.2, with everything see more else equal.