I Open the licence file with notepad and.....:
# License creation date: Dec 5, 2010
#
Issued=1291546099
#
# License expiry date: <never expires>
#
ValidThru=0
#
# Update license expiry date: Dec 5, 2011
So,if I activate IS ex.in 15.12.2010,nevermind,the validat licence is the same...
:'( But this is a little thoughtless,because,it this moment if I do not have a internet connection?