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Of course, we probably don't know anything close to the full story yet.
However, anyone who got any money back from Bitcoinica should be aware that this money could be subject to clawbacks. Once Bitcoinica knew that they couldn't make full repayments, they had an obligation to prioritize their debts and protect the interests of other creditors. If they paid some people 100% of the money they held once they knew they couldn't pay back everyone, that could be subject to a clawback.
Well, they only found out they couldn't make full repayments since just before genjix's announcement in the first post of this thread. So from what you say, the repayments made before that aren't subject to clawback.
I would like to hear from Tihan (or Andrew Thornbury, or whoever the owner is) whether they intend for users to take the 30% cut of their funds. As the owners, they are legally obligated to return users 100% of their funds. That Bitcoinica Consultancy was in charge of security doesn't matter, Tihan is equally at fault since he assigned them the job.
Tihan invested $500k in CoinLab, he should get that back for bitcoinica users if his VC fund is out of funds. CoinLab was a waste of money (mining coins with gamer's GPUs isn't close to competitive with FPGA's and ASICs).