Please follow link next to find out how to monitor blocking locks... http://support.microsoft.com/kb/271509 - That would tell you who is blocking who.
Out of curiosity... is standalone database running on the same server production is? what's the purpose of such standalone database?
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Pablo (Paul) Berzukov
Author of Understanding Database Administration available at Amazon and other bookstores.
Disclaimer: Advice is provided to the best of my knowledge but no implicit or explicit warranties are provided. Since the advisor explicitly encourages testing any and all suggestions on a test non-production environment advisor should not held liable or responsible for any actions taken based on the given advice.