General Back Up Question from newbie

Hi All

               I have only just started using ghost so please bare with me, I backed up my c drive last week, now it has just started the back up again as scheduled, but it seems to be taking a long time, I'm sure it only took about 30 mins to back up the whole drive, but at the moment its stuck on 1% , it says "Creating Recovery Point", compare Volume C against PC Drive001.v2i, Calculating Remaining Time, Initializing Reconciling volume.

 

Just wondered why it is taking so long, would I not be better performing a complete new back up every time??

 

Thanks

 

Pete