Starting next week, queries to the HEASARC using the Virtual Observatory Cone Search protocol will use our Xamin interface rather than a script that invokes Browse. While the results for queries should be the same, the VOTables returned are not byte identical (e.g., they include differing white space). For a few tables changes have been made to column definitions to meet the requirements of the cone search protocol. In some cases ID columns that were returned as integers are now considered to be strings to meet the spec. Please get in touch with us if you have any problems. Our internal tests show the Xamin queries running about twice as fast.