I am having the same issue. I have sent: IP address, dwolla account number and approximate account balance. Not to mention that several of my other accounts have been approved
Why would anyone want to have several accounts? Is that to circumwent the daily withdrawal limits? If so, that might be the case why it's rejected.
MagicalTux (owner of mtGox) is also available on freenode irc network in channel #mtgox.
I asume it does not help much to post here, you should get in touch with mtGox and check what's the reason the claim has been rejected.
I have multiple accounts so that my bots can have different strategies. And I have sent several messages to MtGox (all of which are being ignored).