I installed version 1.5.2 and 1.5.2+ with the same problem.
Everything ok. After installation i logout and couldn´t login again.
The message indicate that the browser do not accept cookies. The same with 3 other PC. I disable security (low), trusted servers etc.
I can use Firefox in my PC without problems. It seems may be a server adjustment. Linux Mandrake Apache an MySql.
Any suggestions?
Memory limit 16 Mb