The route has been good for the last couple of days now. But from tuesday (Dec 7th) night to wednesday (Dec 8th, European union time...) there were some packet losses, and they weren't over the Atlantic line - they were at Chicago. Now my pingplotter to ma seems to go as usual, no problems whatsoever. So it has probably been a net problem... Hopefully Zuum will calm down now.
edited: correct dates changed - had my tuesday at 6th...