We are aware of the speed issue when adding rows into a financial statement. Also, adding a row may not correctly update all of the =SUM() formulas. Look for an improvement in these areas on the next release of Ledger.

In the interim, you will notice a significant speed improvement between running with your data on your local hard disk as opposed to over your network wire. Even if your network is running at 100 Mbits/sec, your local hard disk transfers data in much larger "hunks". Try copying your G/L data to a subdirectory on your hard disk and printing (and editing) your financial statements there). If you make changes to your Financial Statements, don't forget to copy them back to the network drive.

Regards