I was not implying anything about your capability as a security researcher. I looked at your site before I wrote my comment.
Many people, as I'm sure you know, often say "There's a security vulnerability!" and a lot of people get scared, potentially damaging the reputation of the product in question. I try very hard to keep a level head when reports of secuirty vulnerabilities arise because, as I said, they need to be evaluated carefully. Any fix that is released really needs to fix the problem, without introducing new ones.
WordPress 1.5.1.1 suffered from one SQL injection vulnerability, and it was fixed in 1.5.1.2. If another vulnerability does exist, the appropriate steps will be taken in due course.