I start playing Tiger Woods PGA Tour 14 and get an update, which is fine, I then go on the play one of the following;
Trials HD, Trials Evolution, Mercury, Hydro Thunder Hurricane, Peggle, Pinball FX2
for which I may also get an update. The problem is when I go back to play PGA 14 I get the update I got maybe an hour ago again. So play game for a while and play one of the others and I may get an update again for that game. It's as if one game update is being overwritten by another so when the game checks to see if the update is valid, which it will not be, it then proceeds to download it again.
The above list of games is not exhaustive they are just the ones I have tried over the course of a few hours.