Yes, Horde 3 works well with MySQL 5. I'm using Horde 3.0.6 together with MySQL 5.0.16, although it's on Windows 2000, I haven't encountered any problem as of now. -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.371 / Virus Database: 267.14.13/221 - Release Date: 1/4/2006