======Second Announcement====== SPECIAL VOLUME IN HONOUR OF JIRI ADAMEK ON THE OCCASION OF HIS SIXTIETH BIRTHDAY Jiri Adamek celebrated his 60th birthday in October, and there will be a Special Issue of the journal Cahiers de Topologie et Géométrie Différentielle Catégoriques dedicated to this occasion. Submission of papers on areas where Jiri Adamek has worked and published are encouraged. The deadline for submission is 15 March 2008. All papers will be carefully refereed following the standards of Cahiers de Topologie et Géométrie Différentielle Catégoriques. For more information, please visit the web page http://www.mat.uc.pt/~cmatcs/JAdamek_volume.html The Guest Editors, Francis Borceux Achim Jung Jirí Rosicky Lurdes Sousa