v4.5 'error on page' when selecting 'account' on new contact page

[eaho]

In both IE 6 and Firefox 1.5, When I go to enter a new contact, the 'Account' field creates 'errors on page'. If I type and the auto search creates a list of accounts, I can't get out of the list. If i click the 'select' button for the account, I can do the search as normal. When I click on a company from this search, it fills in the Account on the new contact form (keeping the popup open). But there is still an error on the page and I can not always continue filling in fields (it often says there is not a match).

The error appears to be centered around the drop down created when I start typing in an account (or click in the field after it's filled in). The drop down won't go away, and I can't enter into the other fields on the page.

[kpit]

I have seen this problem in 4.2.1 as well. it is a problem with AJAX portion when you type in the Account name. This is especially true if the account does not exist. I am looking through the bugs to see if it has been filed.