Font or text rendering problem :(

Question

Hello!
I have a problem in Numbers with text rendering or something like that.
Some characters have wrong representation right in cells. And when I export document to PDF all characters which cross the cell border have white lines.
I already tried to rebuild font cache without luck.
Can anyone help to figure this out?
Thank you!
P.S.
Numbers 2.1, Mac OS X 10.7.2, here is a snapshot:

Answer 1

You already know that but it may be interesting for others.
(1) the OP's document behave the odd way on my machine.
(2) When I insert similar characters in a complementary table in the original document, it behave flawlessly.
Now are new informations.
(3) I copied the content of your tables and pasted values in tables of a blank new document.
With the font set to Helvetica everything was OK.
I tried several fonts.
Avant Garde --> OK
Baskerville --> OK
Calibri --> OK
Arno Pro --> OK
Cochin --> OK
Garamond Premier Pro --> OK
Minion Pro --> OK
Warnock Pro --> OK
Arial --> Odd behavior
This odd behavior doesn't strike in TextEdit or Pages.
So there is clearly a problem between Numbers and Arial
Yvan KOENIG (VALLAURIS, France) lundi 30 janvier 2012
iMac 21”5, i7, 2.8 GHz, 12 Gbytes, 1 Tbytes, mac OS X 10.6.8 and 10.7.2
My Box account  is : http://www.box.com/s/00qnssoyeq2xvc22ra4k