When I try to name a new folder, or upload a file I get get the following:

'Unable to Create New Folder'

'SkyDrive is undergoing some routine maintenance and should be back up shortly.'

and when I try to upload a file it goes to 99% and says

"Sorry, there was a problem uploading your file, please try again.  

This has been occurring for several days.  What's up?  I have over 6 gigs available to me.