Because Steam allows Valve to reverse bans, the studio has. According to him, a signature check issue was caused 'by a combination of conditions occurring while Steam was updating the disk image of a game.' It wasn't the game itself as some of the banned users speculated on the Steam forums. Valve boss Gabe Newell sent an email to erroneously VAC-banned users yesterday afternoon, explaining that the automated system was in error. Valve has reversed many, if not all, of the erroneous bans and given a gift of goodwill to those effected. Unclear as to the reason for their ban and hip to Valve's never comment stance that it had on VAC, these Modern Warfare 2 PC users were ticked off and worst of all, banned from jamming on their sixty-dollar purchase. Over the weekend, a group of motivated individuals began telling us stories of woe involving erroneous Steam bans by Valve's anti-cheat software.
