Ubisoft has issued a new patch for Tom Clancy’s Splinter Cell Double Agent, bringing the PC version of this game to v1.02a. The multiplayer demo can be found here and the singleplayer demo is located here.
Update: this patch removes SecuRom protection from the game (thanks: The Patches Scrolls).

Splinter Cell Double Agent v1.02a Patch (21.7MB)