For the record, these are the error messages I'm getting:
In Thunderbird and Firefox, when I launch them, it says,
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Could not initialize the application's security component. The most likely cause is problems with files in your application's profile directory. Please check that this directory has no read/write restrictions and your hard disk is not full or close to full. It is recommended that you exit the application and fix the problem. If you continue to use this session, you might see incorrect application behaviour when accessing security features.
In Thunderbird, when I try to retrieve my emails off the server, it says,
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Unable to write the email to the mailbox. Make sure the file system allows you write privileges, and you have enough disk space to copy the mailbox.
It seems pretty clear to me that these are connected with having "indeterminable" permissions on my Home folder. Can someone tell me how to sort out those permissions so that my apps will run properly?
Many thanks