Yesterday I bought a five-PC licence to Total Security 2010 and have now installed it on four systems. Some minor installation glitches but nothing serious. Problems start with registration. First system (desktop XP Pro SP3 English), registration with licence key OK. Second system (laptop W7 English), upgrade from evaluation version OK. Third (laptop W7 English) and fourth system (netbook XP Home SP3 Spanish), installation OK but registration with the same key tells me "The license key you have entered does not match this product type". Looking at my account page on the BD site shows me that my licence is active and the key I use is correct. I managed to assign the evaluation licence on the third system but the fourth is now unprotected. Please help.