How to transfer text messages from iPhone to Android with iOS 5?
Worked like a charm for me with the 2nd option (web service convertion) on this page: http://faked.org/isms2droid/
I´m running the latest Itunes 10.5.2.11 and Win 7 32-bit Enterprise. My IPhone runs iOS 5.0.1 My Android is a Xperia Arc with Android 2.3.3

What I did was basically create a PC-backup (used to run ICloud but changed that option in Itunes), look up the needed db-file (according to the guide), convert it with the web service and then load it on to the Android phone memory-card, and then use the SMS backup and Restore to restore the sms-database. 

Only problem I had, was that all the sms-es that had been sent or received with iMessage was corrupted. Apparently they dont store phonenumber with these posts and therefore all these messages where put in a "Unknown" thread, with no date connected to them.

Regards 
/Jimmy