I currently run 1.5.2 and it tells me that 1.5.3 is available. Great ! I click to update, however, once it seems to be completed, I get a message talking extracting the ZIP and running CalSync.exe. I guess this should be changed to reflect Linux. Also, I now understand this is only a download, that I still have to extract the files and run the program. AFAIK, this is not an update, just a download of a new version that still needs to be extracted to properly run. Also, where is the downloaded file, for a Linux user ? Under ~/Downloads, or elsewhere ?