>>On another note: this morning I seem to be getting some erratic formatting when viewing a message. Font size is sometimes larger (and not, I believe, the normal font). This on IE - haven't checked any other browser .....
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>Is your browser set to still work at 100%?

100% what :-}

FWIW, didn't see the behaviour on Chrome and IE stopped doing it. Almost certainly some temporary quirk at this end.....