Solution for font problem using iTunes store (iTunes 9 @ Vista)

Question

For all those of you who experience font problems rendering the iTunes store (I got partly jibberish many letters rendered as squares). For me it turned out that
my Arial fonts were corrupted (there were other files with the same font names residing in my Windows font directory). Deleting all Arial and installing them new from another Vista machine solved the problem.
I got to analyze the problem as follows: the rendering of the iTunes 9 store is done by the webkit. This reads a list of available fonts with files names from the registry and stores it in the file C:\Users\YOURNAME\AppData\Local\Apple Computer\WebKit\FontsList.plist (do not edit, it is generated each time you start iTunes anew). If you compare (e.g., using diffdaff) this file to the one of a Vista computer that does not show the font problem, you pretty soon realize which font family might cause the problem for you. For me it was Arial (which is used by Windows as a substitution for the Helvetica fonts BTW).

Answer 1

You can try to download items one at a time to get rid of this error message. Follow these steps for such:
1) Open iTunes.
2) From the Store pull-down menu at the top, choose Check for Purchases.
3) Enter your account name and password, then click Check. Your purchases should begin downloading.
4) Under the STORE section on the left, click Downloads.
5) Click the Pause All button in the lower-right corner. This will temporarily pause all of your downloads.
6) To resume only one of the downloads, click the refresh button that appears to the right of one of the paused downloads.
If that doesn't help, you may want to consider performing the following to be sure no software is conflicting with iTunes:
1.) Disable all anti-virus software you may have running
2.) Disable all firewall software you may have running
3.) Disable all web acceleration software you may have running
4.) If you are connected to the internet via an internet router, please disconnect it and connect directly via your broadband modem
Hope this helps =)