Sun Acknowledges Security Hole in Patch Process

Last week, Sun issued another update to its J2SE Runtime Environment (JRE), but the advisory came with a caveat: Even if you apply the latest patch, your machine may still be vulnerable to attacks if you never bother to uninstall or remove older versions of the software.

http://blog.washingtonpost.com/securityfix/2006/08/sun_acknowledges_major_oops_in.html

I have allways uninstalled old Java as a matter of course, and now I know why I do. Ta ;D