Quote from teun:
Can you please give a link? I can't find any.
Here they say it is possible, only the underwriters of the IPO are not allowed to lend out shares for short sale for 30 days.
http://www.investopedia.com/ask/answers/05/062905.asp
Yep thats true. But since the shares take days to clear non-syndicate members wont officially be able to lend shares till after a few days.