I had a lot of issues trying to upgrade to 3.2l; I found two potential issues that might have caused them, one of them being the System Info binding. After fixing both, it looks like the system is working again.
Just to see whether System Info had anything to do with the behavior I had experienced I re-installed the System Info binding in OH 3.2, and voilá, all hell broke loose in my logs again (and stopped again eventually after I managed to uninstall the binding and cleared the cache). So yes, there definitively seems to be an issue with the System Info binding…