Every time i put a serial number to activate "ADOBE CS5 Master Collection" but can't start my CS5 suit, Just getting the message "Licensing for this product has expired" Only i found the way to start any of the Adobe product by changing my system date back to some year like year before 2009 By changing date it works perfectly but how do i get out of this trouble? Because changing the system date effects many other things like GMail stops working etc etc.
your lincensed is valid not keygen. contact CS adobe. or if you using keygen you must patch host first.
My guess is you're using a pirated copy of CS5 suite, tsk, tsk, tsk. And I'm in agreement with andiklive, you probably need to edit your "Hosts" file in your Windows dir. Otherwise, drop the stolen stuff and go with the more affordable Open-Source apps like GIMP, Inkscape and Scribus and etc. Same bang, lot less bucks for legal use.
your software is read it by the author is not valid again perhaps you get it that software from your friend who have same key number, so look for the cracking.