If you open an eForm from IBM ECM FileNet P8 Application Engine (AE) Workplace, enter the DST date into a date cell for either summer time or winter time for your timezone and save it, then open the eForm within AE, the previous day appears in the date cell.
Enter 27/03/2011, and it will appear as 26/03/2011 when you're in a European time zone
Enter 13/03/2011, and it will appear as 12/03/2011 when you're in a US time zone
Resolving the problem
Add eFormsMapDateToGMTNoon=true to the bootstrap.properties file on your AE
Upgrade to P8 eForms 4.0.2-012