No, I was working within a personal geodatabase on my local machine. This slow-down with the field calculator and calculate geometry really hurts our productivity. In 9.3.1 I could publish a new Parcel feature class in about an hour, now, in 10, it takes about 4 hours.
this problem is not unique to person geodatabase format. I see the calculation slow down in shapefiles, file geodatabases and in enterprise level geodatabases when comparing 10 vs 9.3.1. 9.3.1 wins!