I hate to be the bearer of bad news, but you are about to discover that there is a limit on how much karma you can give in a 24 hour period. Same thing happened to me about 3 weeks ago. Best of luck.
Yeah, it's still telling me that I've given too much karma to TVOR up here, whom I haven't 'frubaled' in days. But I appreciate your karma quest! *cheers* Just remember to sign your name at the end of the 'send' thingy, since people won't know who it's from otherwise. (I learned that the hard way!)