New Features and Enhancements in Release 5.0.12
Browser
Mozilla supported on OS/2
Beginning with R5.0.12, Mozilla is a supported web browser for IBM OS/2.
Netscape 7/Mozilla supported on Linux
Beginning with R5.0.12, Netscape 7 (Mozilla) is a supported web browser for Linux.
Calendar and Scheduling
Better functionality using Repeating events in a mixed R5 and Notes 6 environment
The Repeating event model has been updated to provide better functionality in a mixed Notes R5.0.x and Notes/Domino 6 user environment. For example, reschedules of Repeating meetings in Notes 6 and later will work seamlessly with R5 users.
Client
Replaced Notes Single Log-on Service (ngina.dll) with Network Provider
The Notes Single Log-on service (ngina.dll) has been replaced with Network Provider to allow single log-on. In prior R5 releases, users needed to choose between Notes Single Logon and other third-party applications which use the same feature.
"Over-quota" message has been re-worked
The previous "over-quota" message:
Your message will be sent, but cannot be saved in your Sent folder because your mail file has exceeded the quota of XX MB set by your administrator.
has been re-worked to provide better information about the specific context that caused the error condition. For example, there are several ways that a user might bump up against a quota in a mail file, including sending mail, saving a draft message, attaching a file to a mail message, and even modifying the design of the mail file.
DECS
Access to Microsoft SQLServer data for DECS, via OLE-DB
The Lotus Connector for OLE-DB provides native connectivity to Microsoft SQL 2000 and Microsoft Access 2000. The OLE-DB Connector is certified on Windows NT and Windows 2000, and can be used with DECS 5.0.12. You may also use the OLE-DB Connector with the Lotus Connector LSX.
DOLS
Install and Configuration Support for Multi-server SSO/DSAPI environment
Users authenticated in Multi-server SSO or DSAPI external authentication configurations can now install and configure DOLS-enabled applications for offline use.
Subscription download support for Reverse Proxy server configurations
DOLS subscriptions can be downloaded and installed offline in Reverse Proxy server configurations, including iPlanet.
Subscription configuration support for dual TCPIP addresses, for Notes RPC connection to Domino servers
Administrators can configure a Domino server to support DOLS subscriptions from intranet and extranet environments where unique TCPIP addresses are used to connect via Notes RPC.
Platforms
Citrix Metaframe XP support
Beginning with R5.0.12, Citrix Metaframe XP is a supported platform for Notes.
End of life and service for DB2 LSX
The DB2 LSX will no longer ship with Domino starting in Domino 5.0.10. The DB2 LSX is similar to LS:DO but it offers native access to DB2 as opposed to using ODBC with LS:DO. Its functionality has been replaced by using the Lotus Connector for DB2, which provides native access, in conjunction with the Lotus Connector LSX (LC LSX). For more information on the Lotus Connector for DB2 and the Lotus Connector LSX | 
