The attributes are incorrect.

644 & 755 are not "world writable" attributes.

7 - "rwx" (r)ead, (w)rite, e(x)ecute, for Owner/User,
5 - "r*x" for Group,
5 - "r*x" for world/Other <-- No "world" write permissions

6 - "rw*" (r)ead, (w)rite, e(x)ecute, for Owner/User,
4 - "r**" for Group,
4 - "r**" for world/Other <-- No "world" write permissions

Thanks :) will give it a try now. I wonder why the one on my test forum still works?

--------------- Added [DATE]1236896230[/DATE] at [TIME]1236896230[/TIME] ---------------

I changed the attributes for the datastore file and rebuilt my post cache and all fixed, thank you very much :)