QB Issue Resolution:

make sure you are running the most recent version of 2007 by running QuickBooks->Check For Updates. There were fixes for this in later versions.

Also, if you are synching via MobileMe, turn off the sync for preferences. You can sync everything else via Mobileme but not preferences.

Resolution for Issue 'why is my product registration being requested when i have had it for 2 years?' available: Yes (Solved).
Source: Intuit Community forum.

why is my product registration being requested when i have had it for 2 years?: this issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the issue yourself by looking for a resolution described below. If it is a complex issue or you are unable to solve the issue, you may contact us by clicking here or by using other support options.

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