COPASI 4.4 (Build 26), which is a part of our stable release series, has been made available for download on May 8, 2008. This is a bug fix release and does not contain any new features A list of resolved issues can be found in the changelog for this release. Access to the packages is provided in our non-commercial or commercial download areas. Every user including those using development releases are strongly encouraged to update to this new stable release.

Since this is only a bug fix release the current user documentation is still valid.

Special thanks go to our users:

• Melanie Stefan
• Nicolas Le Novere
• Marvin Schulz

for helping us improving COPASI by reporting their problems.