This is really driving me insane. I use SharePoint Workspaces 2010 for offline caching of my work Sharepoint sites. Past few days my company's SharePoint server has been down, and I noticed that ever since the server went down the OfficeFileCache folder just GROWS uncontrollably taking up every available space on my harddisk until at one point my disk was completely full (0 space available!), which meant I could not do anything.
I managed to clear a few GB but then MSOSYNC.exe started ballooning the OfficeFileCache again until I managed to kill the process via Task Manager. Unfortunately by that time I am not down to less than 50MB of free disk space. This even happens if I am disconnected from the Internet.
How do I free up all this excess space?? I don't want to delete the OfficeFileCache folder because, I still need access to my files until the SharePoint server is up again, but I can't keep running with only 50MB of free space.
On top of that once I killed MSOSYNC.exe I can't put new files into SharePoint Workspaces, which begates the whole purpose of working offline.