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Browser options don't remain

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Browser options don't remain, are constantly dumped on options by default.

Browser options don't remain, are constantly dumped on options by default.

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You do not say what options don't remain, try

http://kb.mozillazine.org/Corrupt_localstore.rdf

Check your profile for numbered duplicate files, you might have a read-only (write-protected file) generally from backing and restoring from read only media such as a CD-ROM if anyone still uses those instead of thumb drives.