Check your hyperlinks panel. If any hyperlinks are copied from another document, indesign makes "shared" hyperlinks, wich means that everytime you do anything, indesign wil check both documents for any changes, and lags for 3 seconds. It made indesign unusable for me, what a terrible "feature". It's the only thing that have made indesign lag to me. Should normally not have anything to do with your update though, check it anyway.