You may want to check Lenovo's website for any driver updates for your notebook, especially for the 1000 wifi card.
Thanks for your reply. I have already completely de-installed and then downloaded - reinstalled the latest WiFi Link 1000 drivers from Lenovo's site, version 188.8.131.52 (All drivers up to date, bios up to date, etc).
Any help would be appreciated.
UPDATE, INTEL PLEASE READ
Okay, after about a week of debugging I may have found something fascinating. So, the BSODs in NetW5S32.sys were still occuring during WiFi use of 802.11n/g with WPA2-PSK encryption. Just on a whim, I decided to set my router (Linksys E3000) to limit the 2.4gHz band to WPA-PSK (used to be mixed mode WPA/WPA2 PSK). Then redid the WiFi connection on the SL510 to use WPA-PSK. Now about two hours later and almost 3gb transfered (I did some heavy throughput copies), there have been no further BSODs.
So, definately appears to be a driver problem, may be throughput related (since the WPA mode limits the 802.11n to 54Mbps) or could be other driver software issue.
Any recommendations or ideas to further reconcile - or leave as is?