Typo 4.0.3 freezing while searching in IE6

I have a question regarding Typo 4.0.3. IÂ’ve noticed an error in IE6
when the temporary internet files setting is set to refresh the cache
for “Every visit to the page”. I have another application that my users
use that requires that setting (the default in IE6 is “automatically”,
that setting does not create an error). Typo freezes up during a live
search when the setting is set to “Every visit to the page”. This error
seems to only occur on Typo 4.0.3. IÂ’ve tested in on the new version of
typo and on version 2.6.0 and the error is not occurring.

I would like to continue using 4.0.3 because it is the most stable
right now. Any suggestions on what code was added to the newest version
that might have fixed this issue? I hope to just modify the code in
4.0.3 to correct this issue.

Any help would be appreciated.