DatePicker and JSON autocomplete stop working after 5 minutes

DatePicker and JSON autocomplete stop working after 5 minutes

Got this from a client. I was wondering if anyone ran into the problem and/or has a fix for it.
 
I'm having a problem where 5 or so minutes of inactivity on the page pass by, the datepicker will appear but don't update the textbox after selecting the date. Also, after 5 minutes of inactivity, the JSON AJAX auto-complete stops showing up.
 
Using IE v8.0.6001.18702