Reason I'm asking is I have the usual yellow shield type icon in my tray but it's at only 5% after two hours! I've never known an update to take so long.
PC running slow (could be the update itself, if legit?) but Avast, Superantispyware, CCleaner and Glary utilities all clear. Defragged and did a system restore too. Using Vodafone mobile BB and the connection isn't great but it's not that bad - e.g. browsing at a reasonable speed, it's just the program and file opening that is sluggish.
XP SP3
Should I be concerned?