I have Uni/NL/OFB and the patches.  Any community lost that has either a cash register or is a resturant just loads and loads and loads.  I can hear the birds chirping but nothing is happening.  Community lots with no commercial ventures like graveyards load quick and easy.  I removed all hacks and tried converting the offending lots to residential to see if I could get in them but no luck. 

//EDIT\\  There seems to be an issue with Sims Connection produce type objects.  I suspected this and had removed them but the lots still didn't load.  I can have a sim go to those lots in debug mode and just delete them when the error message comes up.