The development team has really been on a bug killing spree last week and will continue that at least for a week or two until we hopefully get a stable Toolkit 5 out. If you find new serious or less serious bugs, please report them.
The IT Mill Toolkit 5.2.2 packages are available for download from the download page:
http://www.itmill.com/downloads/itmill-toolkit.htm
Please see the Release Notes
http://itmill.com/download/itmill-toolkit/stable/5.2.2/release-notes.html
for details regarding the fixes.