That's interesting. For some reason I don't have Microsoft Virtual WiFi Miniport Adapter. But so far from what I've found for me is having all updates and IE9 installed there is no memory leak issue. It was as soon as I installed IE10 and the prerequisite platform update (KB2670838) that svchost.exe started eating up ram again. It was at 147 MB(147, 776K) after 24 hours.
I've uninstalled IE10 and after 24 hours the svchost.exe is at 13 MB(13, 664K). Which is still slightly odd since normally it stays around 8.5 MB. I'm not sure if it still has a slight memory leak problem or if it will stay there. I'll have to see what it does over the next few days.
I'm wondering if you can install IE11 without installing IE10 and if it has the same issue.