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Ok, Chris03 - you obviously haven't been paying attention in your couple of years on this site. . I will spare you the details and try to minimize my rage at your idiot post, but you clearly do not realize that the "not for production sites" is a RECENT advisement due to the unstable nature of 2.2.x and came only months after xoops.org was promoting 2.2.x upgrades.
That NOT FOR PRODUCTION SITES should actually read:
"Our sincere apologies to the thousands of Xoopsers who upgraded to XOOPS 2.2.x over the several months we were promoting it. We should never have released a product as FINAL that was not properly tested, and we realize the damage doing so has done to XOOPS user websites and the XOOPS community. We hope you will continue to bear with us as we try to fix the most egregious bugs in 2.2.x and produce an upgrade path to a stable 2.4. Be advised, however, that we're not really focusing on creating a stable 2.2.x because so many of our developers have left over the last few years in disgust. Given this resource constraint we are focusing on building an upgrade path to a stable 2.4 instead. So, if you can, you should downgrade to 2.0.x, but we understand that this is impractical for many users. Again, our apologies for this. We're doing the best we can. For new users, 2.2.x is NOT FOR PRODUCTION SITES, use 2.0.x instead."
Petkove - Yes, a lot of things changed from 2.0.x to 2.2.x and those changes are certainly the cause in some way of the errors in 2.2.x. If you have the stomach to downgrade to 2.0, that is certainly the best way to go. However, this may be impractical for hundreds and perhaps thousands of us who run highly trafficked sites and cannot risk potential additional complications or errors introduced by downgrading.
If it's a new site or a recent upgrade, I would downgrade.