We all knew that the second someone started wielding their "defensive" patents the whole system was going to fall apart. Well...here we go I guess.
Apple are suing Motorola(Google), so this lawsuit is just another part of the response directed back at Apple. It's not like Motorola just decided to go after another cellphone manufacturer for patent violations, as an offensive move.
2010, Oct 06: Motorola sues Apple over 18 patents, and files an ITC complaint against Apple over 6 of them.
2010, Oct 29: Apple sues Motorola over 6 patents, and files an ITC complaint against Motorola over 3 of them.