I recently had my main board (logic board) replaced, thanks to a badly manufactured product. Anyway on my old main board I had ID, PH and AI installed. Now every time I start up one of the three programs, it prompts me for a new serial number. As I have already used both strikes (on the desktop and laptop), this new problem kind of leaves me on thin ice, with now less than 30 days time to get a new serial-number. Do I have to rebuy the student package or is it possible to get a new serial number?
You have to get in touch with support. As the product was already activated twice, you won't be able to activate a third time.
See the following thread: http://forums.adobe.com/message/4034661#4034661
You can use the earlier serial number after that. Keep your oder details and proof of purchase handy when you chat/call support.