Patch 1.2.1 is released today. Finally, it seems, Ubi have listened and started releasing smalle patches at a quicker rate than the big ones - if only to get the more criticial errors fixed. Time will tell if this good trend continues.

Why the patch?
"It appeared with the release of 1.2 patch that achievement could be copied from one user to another by using the Compare Profile feature. That means that a further advanced player could regress by comparing his achievement with those of a less advanced player. This only affects achievement and no other part of player profile.

1.2.1 patch fixes this bug and now prevents achievements to be copied."