Outlook for Mac 2011- got it the first week it came out and had no problem for a year and a half- until I loaded Lion- for past several months since, it is virtually useless- have rebuilt database but in both databases, it will open and within minutes gets hung and stops responding- need my contacts! but no longer have CD or product key to re-install- any ideas before I simply delete and use gmail? (which I loathe)
 I had a specific group and half of the contacts in the group have disappeared and I don't know how to get them back in the group. I do not like this system at all. The instructions given are not clear. How do I move people from my contact list into a specific group?
For the third time in a year and a half I was unable to open Outlook getting a message that my identity needed to be rebuilt. 
The rebuild failed and I had to piece together various methods gleaned from these forums and elsewhere on the net to get a semblance of recovery. 
My question is: What causes this Identity corruption? What can I do to avoid it? 
I have seen many work arounds to fix but nothing to indicate a cause.  
Thanks
I'm having a particular problem currently with Outlook 2011 for Mac.  It involves typing contractions starting with "I'" such as I've or I'm.

It appears that if I type these contractions in a new email that uses the default black color and no italics everything is fine.  BUT, if I use italics or color things malfunction.  How?  If I type "I've" the "v" becomes capitalized and suddenly everything grinds to a half.  If I type the "e" I then hear a bell, the menu in the email fades to gray and I cannot type anything further.  STRANGE!  Same if I type "I'm".  The "m" capitalizes but then the ability to type ends, the keyboard freezes so to speak and when I hit a key I simply hear a bell.  Once this problem arises going back to black font and no italics doesn't help.  The problem continues.  I can go to the capitalized letter, highlight it and then type it small and it will work.  BUT, I cannot type emails that way, stopping each time.

Any ideas as to the problem?  I installed Mountain Lion so I am guessing that did something although I do not know.

Thanks.