Although I don't use windows, I'll donate some bitcoins to puddinpop if they release the client source code as open source.  Otherwise I'll donate some bitcoins to the first person to release a hacked/modified version of the client that disables the 10% autopayment on block generation, whichever comes first.

puddinpop would ultimately establish far more profits if the client remains closed, at least until using the client is no longer beneficial as the difficulty will have increased far too much for it to be as beneficial as it was compared to noncuda clients.  However, reverting back to a noncuda client would be worse than continuing to use the cuda client and therefore unless an alternative is established, puddinpop will continue to receive plenty of profits from usage of the client.  While it will be nice to donate a nice amount to puddinpop for their efforts, I personally feel 10% for all block generations from everyone is too much, and I would like to encourage open source or otherwise rewarding those that defeat the proprietary profiting addition.

Keep in mind while khash/sec is increased providing higher chance to generate a block, more electricity is used to do so.  I don't believe puddinpop is willing to pay 10% of electricity bill or cost of extra electricities used from usage of this software.

Also, Satoshi and sirius-m Have put forth a lot of hard work into the open source Bitcoin client and do not force donations.  I would like to donate to Satoshi for his efforts. ^_^