Am not sure where to post this, could also post this in the module forum instead, but here I go:
I came to understand that silverstripe 2.4 will say goodbey to prototype and favor jQuery instead. But I have noticed that the beta of 2.4 still uses prototype for i18n. Is this going to change?
If not, this brings me to the following point: If you use i18n you are using prototype and therefor you have to use jQuery noconflict if you also want to use jQuery.
I have noticed that at least one of the modules (the Newsletter module in its latest trunk - could also be the userdefined forms since you need to install that as well) assumes you are not using prototype, and it therefor uses $() instead of jQuery() to start it's magic in the document.ready function for the subscription page. I hope that people are aware of this and offer a way to circumvent this - or that we can stop using prototype all together at some point.