Skys the Limit- that is crazy, because the same thing happened to me, and when I emailed support they gave me the bonus (100% up to $50, but not the extra $25 CC bonus, oh well). Here is the repsonse I got from them:
From: PokerStars Support
Fri 3/14/08 5:14 PM
thank you for your email. Currently, if you make your first money deposit,
PokerStars will give you a 100% bonus up to $50.
You needed to use the bonus code "First2008" at the time of making your
deposit. Since you did not enter this code, the bonus wasn't automatically
credited to your account.
I have now manually credited the 100% deposit bonus according to your
$100.00 deposit to your account.
The bonus has been assigned to your account and it is in "pending" state.
Once you earn the required FPPs for playing in live games and tournaments,
your bonus moves from pending into your PokerStars cash account. We will
send you an email that confirms that the bonus funds have been moved to
your cash account, and you can see this transaction in your transaction
history in the Cashier window.
Since the bonus has already been assigned to your account, making any
cashouts or deposits won't affect the bonus to be credited once you earn
the required FPPs.
PokerStars Support Team