Dear Microsoft,
it is said that "Errare humanum est, perseverare autem diabolicum". Regarding myself, I -doh!- persisted in the habit of allowing Microsoft Update to install the recent CU. Regarding Microsoft, again, again, after problems in July (http://community.office365.com/en-us/f/156/p/254376/790491.aspx#790491), September (https://social.technet.microsoft.com/Forums/office/en-US/0cfb6496-a537-41cc-a297-6eda532ef2dd/skydrive-for-business-and-office-upload-center-broken-after-september-2014-office-update-yesterday?forum=officesetupdeploy), now problems after the last cumulative update!
After updates, at every reboot or startup, after one or two minutes, Office Upload Center says that Office Upload Center found a problem while accessing the document cache, says that cache must be repaired. After repairing, all seems ok, OneDrive seems to work but if I add a new file, the file remains in "stale state", ie, it keeps updating and the file is no more accessible, as shown in images placed underneath.
Already tried to solve the problem as suggested in other posts as in http://community.office365.com/en-us/f/148/t/178459.aspx.
Starting to be VERY annoyed: I'll open also a O365 support ticket.
Diegus