A number of users at DSLReports.com have reported severe problems with firmware 1.45 on the Linksys BEFSR41 router. I'd advise checking the forums before upgrading this router as a few people have said their routers are rendered useless after updating to this release. (disclaimer: I have not tried this update personally; I'm just relaying what I've read from others)
In better news, Linksys has sent an email out to customers asking permission to send our personal information to Cisco as part of the buyout. It seems without permission, they won't transfer any personal information - I think this is great that they show respect for their customers' privacy!