I found a minor issue with Project'or RIA Version 1.6.2, in combination with Firefox 6.0
The planning alignment is somehow wrong: the activities (and milestones and so on) are a little less high (1 or 2 pixels) than the rest of the calendar. This leads to a false alignment of the calendar: the corresponding timeline (chart) for the activity does not exactly line up behind the activity text. For the first activities this is not a big issue, however, with more activities it gets hard to identify text with the corresponding timeline.
If desired I could make a screenshot for you.
In Internet Explorer 8 this does not occur.
I tested this with Release Candidate 1.7.0 too, and also in that version this occurs.
I hope I have given you enough information to work with.
This issue has been fixed on V1.7.0.
To be sure to get the correction, you must clear your browser cache.
Confirmed; when the browser cache is cleared the problem is solved. 🙂