A rash of Qgis 1.4 updates occurred in the past couple days, all on standalone versions.
The SQLite3 Framework was updated to 3.6.22 + Spatialite 2.4.0rc2. The Spatialite update is required for Qgis 1.4 to be able to open Spatialite data sources, and is also part of the latest update to the standalone packages.