I know that there are several questions for this, but this is user-specific, so please do not consider this question as EXACT duplicate.
User Ham and Bacon was suspended, for "voting irregularities". What does it mean. Did he voted up himself with another account or is that because of his questions? His reputation increases fast and I see no problem with him. He always helped me with my problems & most of his answers are great
The details of a suspension are private, the moderators involved won't tell you much about it. If the user in question wants to reveal anything himself, he is free to do so. But otherwise the exact details of the suspension will be considered private.
Voting irregularities include also votes done from a user (who could not be even using two different accounts) to other users.
Suppose a user up-votes twenty posts made from the same user in a minute; the system will detect the situation, and automatically remove the votes.
The same applies to other voting patterns including, as you said, a user who uses two different accounts to vote other users, or to vote (from a secondary account) the posts created with the main account. (In short, the second case would be a way for the user to vote himself.)
If the user keeps doing the same thing more than once, then moderators would temporary suspended the account.
As down-votes on questions don't influence the reputation of who votes, in the same way up-votes do, you could not notice any change in the reputation of who has been caught with vote irregularities.
