Why do my signatures sync and yet they do not?

Question

I set up my mail signatures on one Mac. And I choose a different signature for each email account.
Then I reset MobileMe with those signatures.
My other Macs are then synchronized by replacing their signatures with the ones from MobileMe. And I choose which signatures to use for each account.
Everything works for 1 -3 syncs.
Then, I get the message that syncing will change my signatures. I did not change them.
It shows me before and after signatures. They are the same.
Then the other Macs also get the same message, and again the before and after are the same.
And it goes on, and on, and on, always wanting to sync, without any changes.
And eventually I notice that even though signatures are there, and were chosen for the different mail accounts, each account will have the choice of NONE instead of the actual signature.
How can I fix this once and for all!

Answer 1

Judy,
Give this a try:
*+Your signatures are stored as webarchive files in your <home>/Library/Mail/Signatures folder. There should be a webarchive file for each signature and they in turn are referenced in a SignaturesByAccount.plist file within the same folder. It is possible that the plist file has become corrupted and/or the signature files are corrupted. Move the SignaturesByAccount.plist file to the desktop and then re-create your signatures to see if that resolves the problem.+*
I found that on another post (Thanks 2point5!)
After you move the SignaturesByAccount.plist to the desktop and recreate the signatures, make sure you then go ahead and trash it. A new one will be made in the Signatures folder.
So far this has worked for me.
Good Luck
John