Sometime back Don blogged about Windows Script 5.7 release. We got lots of feedback on this, people asked for making this as an automatic update and support for 64 bit platform. The good news is that we have heard you. The biggest fix in JScript was the improvements done in Garbage Collection which improved the performance of AJAX/script heavy web site drastically. This fix is now available to all the IE6 users from the Microsoft Download Centre. After monitoring user feedback on this update for a few weeks, we plan to release this as an automatic update to all IE6 users. However for IE6 users who want to try this now, one can go to the above provided link and download it.
– Suresh, Scripting Team