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.