Greg has released three stable kernel updates: 220.127.116.11, 18.104.22.168 and 22.214.171.124. There aren't many changes to 126.96.36.199. That series will not be supported much longer. Both 188.8.131.52 and 184.108.40.206 have a fix for a really nasty sigreturn bug on ARM systems, among other changes. Users of these kernel series must upgrade.