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You may be eligible for relief, but relief does not fall under the innocent spouse rules. If you can establish your signature was forged, and there was not tacit (implied) consent, the joint election is invalid and you will only be liable for your separate tax liability. The Married Filing Separate return you filed should be brought the attention of the IRS. Get the accountant that assisted you in the filing for 2008 to help you in showing the documentation that the IRS will request. Call the num,ber on the notice that you received and explain the situation to them. The agent will be able to explain what they will need from you.