LarryHN, i imagine that you HAVE read the thread history and have seen that i was completely trolled by LD (who tried NEVER to help, starting out directly with insults to my effectiveness). having said that, i agree that a faceoff with a poweruser bully will get me nowhere and will only take up precious time from users looking for help with an annoying issue.
BUT, that is not why i am here. i have solved the problem deriving from the series of permissions bugs in sLow leopard.
no amount of permission repairing or resetting will solve the problem. apparently, because i reinstalled OSX from scratch (reformatting disk first), the Time Machine backup belongs to a defunct user. therefore, even though the username and password are the same, the file that i extract DIRECTLY from TM will be always read-only (i could go via terminal and try some chmod'ifications, but...). therefore, the issue must be tackled with a different approach:
1. open iPhoto
2. open FILE
3. choose FIND BACKUPS (translated from Portuguese)
4. select your timeMachine backup and find the specific image/date you want
5. browse to the iPhoto library you want to import
6. create a new folder in Documents (where permissions will not be an issue)
7. after iPhoto backup has been restored to this folder, go to FILE > IMPORT
voila. worked for me, i hope that this helps the many others who run into the same problem after reformatting and reinstalling OSX leopard (regular or sLow, both seem to act up).
"e pur si muove": i understand perfectly well, LD's recipe was just wrong, dude!