When I see something like this on Slashdot, I figure it's the usual crap science that somebody picked up. Only the press release it links to is from Stanford, which is normally what we think of as a respectable institution.
The basic idea is that tiny decreases in the radioactive decay rates of some isotopes have been observed. Presumably, these were statistically significant decreases, although I don't have details. One case of this seemed to correlate in time with a solar flare, and other cases seem to vary annually in ways that suggest that maybe, somehow, Solar neutrinos are interacting with these isotopes and influencing the decay rates.
I'm not going to believe this until I see strong evidence for it and until multiple groups have confirmed it. It would be cool if it were true, for it would tell us that neutrinos are interacting with other matter in ways that we didn't expect. But, for now, all I've been able to find are two papers (here and here). One is from a conference proceedings (and I've only seen the abstract); the other is a sort of response that has only been uploaded to the preprint server. In other words, as best I can tell, neither of these papers has yet been through any kind of peer review.
The latter paper— by Parkhomov, on the preprint server— has the full text available, although I have to admit I haven't read it. The abstract suggests, however, that he does not observe the effect mentioned in the conference proceedings.
So, we've got two papers: a conference proceedings, and a paper only uploaded to a preprint server, the latter contradicting the former. As such, I'm not going to get all excited about this until the paper trail gets a little bit more solid.
My prediction: this is going to go away and not turn out to be a real effect. But, I guess we should keep our eyes open in case it does turn out to be real. It would surprise the heck out of me if it were real, though.