In iOS4 (4.3 simulator) when I use the font Myriad Pro with the following font method for a cell:
cell.titleLabel.font = [UIFont fontWithName:@"Myriad Pro" size:14];
It looks like this:

In iOS5 (5.0 simulator) when I use the font Myriad Pro with the same font method it looks like this:

Has anyone experienced this behaviour as well (perhaps with other fonts?).
When using
+fontWithName:size:on iOS 5, the font name parameter needs to be the full name of the font file in your app bundle and not just the font family name.