Cracks have begun appearing in the National Spot Exchange Ltd investor community as the fight to retrieve their investments drags on into the fifth month. Even as the investor forum has issued an appeal to its members to pay 0.2 per cent of their investments towards legal and other costs of running the forum, some members have begun circulating links of blogs that show that a senior functionary of the forum was involved in the 2G telecom spectrum scam and was even arrested by investigative agencies. If proved true, this could be a body blow for the forum.