fedex ground is the suxxor... trust me, i know... i work at a custom motorcycle shop and have to deal w/ usps, ups and fedex on a daily basis
heres the lowdown on fedex ground though. fedex bought another smaller company (forget the name) and turned their operation into "fedex ground" - if you look, the colors of fedex air and fedex ground are dfferant. for all intensive purposes, they are differant companies who happen to share the same name. anyway - the way fedex ground works is someone can "buy" a route... by this i mean they buy the rights to deliver on a given route, and buy their own trucks. now one person can buy 1 or 100 routes if they want, and they can in turn hire whomever they wish to work for them, on nearly any schedule that they want. what ends up happening is unqualified people end up as drivers and everything gets messed up. we had a package shipped to us from cali to pa, it made it from cali to pa in 4 business days, not bad. it took 11 days to make it from our local fedex branch (15 miles from us) to our shop because the driver didnt feel like swinging by our way and said the weather was bad for 3 days.
bottom line - fedex air rules. if you need ground, go usps or ups