In very short and concise sentences:
Oblivion crashed every 15-30 minutes.
Read a FAQ recommending uninstall of SF to fix Oblivion.
Uninstalled SF.
Oblivion does not crash.
In an even shorter description of events:
Oblivion crashed.
Uninstalled SF.
Oblivion does not crash.
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I'm in the IDF. (So any new reply by me is a very rare event.)