Product activation ....

Good day for all of you

 

i've bought Norton antiVirus 2008 i think , it was greate , but i face big problem with product activation.

 

the problem is that if i uninstall or format my pc , and install Norton again , it's ok with me , the problem is that after installing the product  3 times , the activation code will be useless , the product wouldn't accept the code anymore .

 

is this problem existed in Norton IS 2010 ?

 

Because i used to format "reimage" my PC weekly , and this will be big problem for me.

 

and if the problem still existed in 2010 products , is there any way to avoid this problem ?

 

Regards