i have a cisco 2901 with c2900-universalk9-mz.SPA.151-4.M4.bin. I upgraded to this to solve an issue with any-connect not working with IE9 10 and 11. That is all OK now but I have a new issue in that the router is losing its vlan info and therefore all the nodes on them.
I get this error esw_mrvl_vlan_port_remove : Unable to find entry for VLAN(351) dbnum(7)