Java Vulnerability - CVE-2010-447611 Feb 2011 | Comments
The bug was around Java inability to parse the following double numbers : 2.2250738585072012e-308 or 2.2250738585072011e-308 - parsing these numbers will result in Java thread hanging indefinitely.
This bug unfortunately affects ColdFusion sites as well, below are two useful blog posts that I found:
Short term fix, would be to patch Java. Longer term would be to wait for Java upgrade, which should be 1.6.0_24.