Is the XMRV virus really the cause of chronic fatigue syndrome?

The recent, October 2009, news that the retrovirus, XMRV, found in men with prostate cancer, has also been found in over 90% of Americans with CFS by the Whittemore Peterson Institute (funded by the NIH, the Nat'l Cancer Institute and the US Dept. of Defense) and thus posited as also being the cause of CFS, has me really concerned because (a) this correlation between the virus and the disease, CFS, has not been found in German and British labs; (b) the idea that a virus is to blame goes against previous findings by many reputable doctors that CFS patients never seem to get any viral infections and that they always have the antibodies to whatever particular virus is prevalent in the community (noticed first during the first well-documented CFS outbreak in the far northern town of Akureyri in Iceland in 1947-49. None of the people with CFS got polio - indeed they had antibodies to polio showing that they had encountered the virus and had developed immunity - which is surprising given that there was an outbreak of polio going around Scandinavia at the time. Remember that this was before the Salk vaccine for polio), (c) this could potentially be disastrous as already it has been posited that only the same highly dangerous drugs that treat AIDS will work against this virus, and (d), I have researched CFS for years and it is not caused by a virus. Indeed, research institutions such as the NIH, universities and hospitals working with a particular food additive derived from seaweed, carrageenan - have described and published most of the symptoms identical with CFS that this additive causes.