Although I was spotting F5WK (364km) well again this evening on 472kHz WSPR, my spots of him were not being uploaded to the WSPRnet database. My PC was showing that the WiFi was connected but I had no internet connectivity, except that other machines were connecting perfectly well! So, I rebooted the Win 7 PC and now all seems to work - spots of F5WK on 472kHz WSPR are now being uploaded OK. Although the first uploaded spot of F5WK is 1812z, I was copying him well before then.
On 10m WSPR the beacon is stand alone and the PC is only needed to start the sync. I could use the radio pips. The 10m beacon then runs (at least) all day on its own on 10m. I use the PC and WSPR software on either 6m or 630m.