Both high definition optical disc formats have already seen their share of setbacks in the form of delays and hardware problems, and now they may be facing some nasty anti-trust allegations pending the results of a recently-launched EU probe. Having already flexed its authoritative muscle against Microsoft, the European Commission has now moved on to investigating the terms that the major backers of Blu-ray and HD DVD are exerting upon their respective licensees. Since the investigation is still "unofficial" at this point, the Commission refused to specify the particular companies being probed, although Sony publicly confirmed that it has received one of the letters in question and that it's cooperating with regulators. If these same regulators decide that nothing fishy is going on, then the matter will be dropped; but if they're displeased with the responses they get, a full anti-trust probe is likely. Best case scenario: only one of the camps ends up being subjected to further scrutiny, leaving the other as clear-cut victor in the format war and saving us all the hassle of choosing sides.