Spotlight comments not found - possible fix

Question

I'm having problems with spotlight comments not being indexed on some files.
The tip from djhartman http://discussions.apple.com/thread.jspa?threadID=1215039&tstart=0 fixed this:-
To remove ALL ACLs from your homedir, use:
chmod -R -N ~
Thanks a lot. The missing files soon after running the command appeared in the smart folder. I migrated from Tiger to Leopard and I have had various issues which I've only recently discovered is due to changes in how Mac OS X now handles access. Hopefully this command has done the job.
I also had some folders and files which were either missing the staff group or had permission problems. I used the following commands to fix this. 755 gives the current user read, write and execute access and gives the group the current user belongs to (probably staff or admin) read and execute access and everyone gets read and execute access. I only used these commands in folders containing my documents not in my ~Library or anywhere else that contains system files.
How to change folders or files to default user, group and permissions
Open terminal:
for folders use
chmod -R 755 (drag and drop folder here) [press enter]
(-R switch = recursively applies to all sub-folders and sub-files)
for files use
chmod 755 (drag and drop file here) [press enter]

Answer 1

Running the password reset actually recreated the problem but that's ok because it helped lead me to the true cause and answer. Being a member of the wrong group can cause all sorts of annoying problems e.g. asking for authentication when deleting files, spotlight not indexing some files etc. Luckily this post http://www.macosxhints.com/article.php?story=200711291134001 had the answer. I'll sum it up here:
I had a problem with spotlight not indexing some files especially spotlight comments. I'd tried deleting spotlight-V100 to re-index and many other things which did not work when all along it was a group membership problem.
I had upgraded from Tiger to Leopard. The GUI tools in Leopard showed my primary group was staff and nothing looked wrong until I discovered the Unix commands thanks to your great script. I didn't run the script but it was very well commented so I knew what the commands did if I ran them in terminal.
dscl . read /Groups/staff
showed I wasn't in the group staff. (even though system preferences>accounts>advanced options said i was!)
sudo dscl . append /Groups/staff GroupMembership $USER
added me to group staff.
sudo chgrp -R staff $HOME
changes group ownership on all files in home to staff.
sudo diskutil repairPermissions /
repair disk permissions.
Reboot.