I wasn't having any ad or script errors this morning using IE11 but the afternoon onwards, quite a few times. The bulk of all script issues are with the Emirates ads that seem to appear rather a lot when I'm browsing the British Airways forums.
Just had ads for Brookes University, Tesco and Bose appear here, 2 in quick succession and no apparent issues with them.
The scrolling can be juddery though. When it's try to load and frame the side adverts as you scroll, the page jumps a lot.
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