Do you have Xojo in its own Space in OS X? It’s probably unrelated but just in case - there’s a bug that I don’t believe has been fixed that causes the loading window to get stuck in the wrong Space. <https://xojo.com/issue/25573>
Thomas, you are not alone. I am using on Windows 7 and the IDE looks as if it hangs for ages and then suddenly comes to life and completes loading. A couple of other odd things too with latest release, the most annoying being that clicking run to start a project to compile doesn’t always do it the first time, more often its two clicks. The most annoying thing however is the ‘slow’ keyboard refresh the longer Xojo is loaded it seems to get worse until the point that letters being typed transpose each other.