I am involved in a project that seems to go towards having to generate a lot of PDF-files.

So I am researching the XMLfo Apache project to see if it could solve the problem. Has anyone used it with Domino? Or know of someone who has?

Maybe you can use iText instead? (as described by Thomas Adrian here)

That looks interesting too!

Anyone else who has created pdf-files from Domino?

Damn, that iText object rocks! I will publish some cool stuff later. 

iText is very nice!, another way might be to send DXL to a (apache FOP) webservice or similar and return the generated result... (pdf file). The webservice can contain templates for the different documents that you want to renerate pdf files for. But iText is perhaps less messy...