I have noticed that for half hour bookings, the red indicator takes up the full hour. I tried both Netscape and IE and found it to be true for both browswers.
For example, I booked a meeting from 9 to 9:30am and it spanned 9 to 10am on the display.
Is this a known bug?
Are you using more than 1 character for that $reserve_icon? If so, then that is the "feature" that I described in the previous posting: