Intel PRO/Wireless 5100 AGN down to ~100K after updates

My X200s WLAN (PRO/Wireless 5100 AGN) is (frequently swicthing to) throttling at ~100K after updates, was always giving me full bandwith before yesterday, IIRC. Can usually disconnect/reconnect and it fixes it for awhile, but not always.
Works fine under Win8 or from the MGA3b2 LiveCD.
Anyone else?
Works fine under Win8 or from the MGA3b2 LiveCD.
Anyone else?