Bummer. This just in...
I guess it's now a battle of unreliable sources -- Hello! magazine vs Fox News.

[...]As for Keanu doling out the big bucks, here's the real story: Two years ago he put some of his upfront money back into the production budget to ensure the creative staff -- costumes, special effects etc. -- could continue working on the trilogy. This was back when the first Matrix had not yet hit pay dirt. Since then, believe me, the movies have been such a success that everyone's gotten what they needed.

But Keanu has not written any personal checks to anyone. Sorry.
FOXNews.com