Esri Business Analyst 10 Service Pack 1 (SP1) is now available from the Esri Support Center. This service pack contains several performance improvements and maintenance fixes.
Here are some of the issues it is meant to fix that we have heard of... there is an exhaustive list on the Download page.
NIM061242 - BA 10 Bug: Changing the terms "Customer" and/ or "Store" in Preferences does not persist in the wizard's text, i.e. they are still called "Customers" and "Stores" after about the third window during cust/store setup.
NIM061418 - BA 10 Bug: Entering text into the SIC search box, when using Add Business Listings (Classic view), does not work. Work around is to type in caps.
NIM061777 - The word County is duplicated in the label for the County Labels layer . Workaround outlined in kb38382.
NIM061817 - Spatial Query Layers used to create Customer and Store layers crash Business Anlayst 10 (contains workaround).
NIM061901 - When data apportionment is set to Hybrid reports and spatial overlay will return zeroes for rings 10 miles and larger [changing to block apportionment is the workaround].
NIM061902 - BA 10 Bug: After creating/adding a custom bds layer, using the geocoder results in an error: "Geocoding Service is damaged, do you want to repair it?" Restarting BA and not adding the custom bds will resolve the issue.
NIM061969 - BA 10 Bug: Customer Setup to geocode addresses results in Unhandled Exception, referencing out of memory.
NIM061972 - BA 10 Bug: USA Geocoding Service is not Geocoding records it successfully geocoded at 9.3.1.
Let's see if these all got in there, as well as the long list on the Download site, and if you don't see your issue here or there, let us know!
Esri recommends that customers using Business Analyst 10 and Business Analyst Premium 10 download and install this service pack at their earliest convenience. You don't need the core ArcGIS 10 SP1, bit it is also now available from the Esri Support Center, and it should not break anything BA and offers some core improvements and fixes that may be helpful.