Got a lot of reports about the Google Message Center freezing in IE8/IE9 this week and determined that this is a problem with an older version of the Java JRE. To resolve this issue simply download and install the latest version of the Java JRE. You may also want to take this opportunity to remove any previous version(s) of Java you may have installed. They probably have security holes that make your system vulnerable.
When attempting to preview or deliver a quarantined email from the POSTINI message center, IE8 or IE9 freezes momentarily.
[step 1] Close IE and install the most up-to-date Java Runtime Environment (JRE).