Possible Duplicate:
I didn't get my 100 starting reputation from associating this account to my other accounts.
I, and atleast one other (JCL), didn't get the +100 reputation for associating other stackexchange accounts. This thread in the main forum was created about it, because we weren't able to ask this question on meta in the first place.
EDIT I fixed my problem by unlinking and relinking the accounts, like people were advising.