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If I were you, I would upgrade.
I had terrible problems with XOOPS 2.0.7.3's email system. It wouldn't send any information to my mail server.
After upgrading, first to 2.0.9 and then to 2.0.9.2, the problem mysteriously went away.
It is troubling that I never found out why the problem occurred in the first place, but it was nice that it was solved in the next version upgrade.
Once this problem went away, I went ahead and donated to XOOPS. I think it's an excellent open source project.
- Sid
ScALR Network Solutions