Red rain? Aliens? Or hoax?

Be careful you human people! An Indian physicist, Dr. Louis claimed red particles in the raindrops in a series of “red rain” in 2001 were alien microbes. I have heard it from minor media, but this time CNN is reporting it (see Mysterious red cells might be aliens). Dr. Louis already has a 2003 arXiv paper (NOT peer reviewed, probably rejected by Nature later) shows a complete “life cycle” of the alien “life form”. It could easily be the most important scientific discovery for this century (or this millennium). However, it is 2006 now. How come there has not been any other group reproducing the result after these years? Maybe

1. the entire scientific community is too reluctant to accept new things, or
2. the government is suppressing this information under an agreement with aliens, or
3. the whole thing is a hoax.

Anyway, I will look for gray rain and claim that I have found grey goos.

(Image credits and links to Popular Science: Is It Raining Aliens?).