I've been using Whatsapp for years, but a few months ago, I started noticing a problem. Replies from one of my contacts, Alan, were getting delayed, and when they arrived, they were shunted to what appears to be a separate chat thread. The problem remained even after updating Whatsapp several times. Upgrading to iOS 7 didn't help either. The delays stretched from minutes to hours and then days. Recently, it stopped completely. I could send messages to Alan but his replies would never reach me. Fed up with the situation, I e-mailed Whatsapp about the problem. They finally got back to me almost a week later with the following reply... Link : ED#160 : How To Fix The Whatsapp Chat History Corruption
