The problem of "non-zero start cluster"

[ronggui]

Every time I use mkdir to generate a directory in a fat32 file system,
I can not mv it to another directoy. And  I use fsck_msdosfs to check
the device, and report that ".." entry in /directory.name has non-zero
start cluster. If I fix the problem, I can move the directory using
mv. So anyone know why the problem of "non-zero start cluster" keeps
occuring?

Thank you very much.

-- 
Ronggui Huang
Department of Sociology
Fudan University, Shanghai, China
黄荣贵
复旦大学社会学系