Professor Seltzer's research group in Harvard is designing a new operating system, VINO. VINO's key attribute is its ability to allow applications to manage kernel policy, by safely downloading code. VINO is one of the so-called extensible OSes . Seltzer's husband is Keith Bostic who was one staff member of UCB's CSRG and co-author of the new daemon book ( The Design and Implementation of the 4.4BSD Operating System ). Her PhD advisor and committee chair is Michael Stonebraker , but I dont think she is interested in database except the DB(3) . John Ousterhout is on her committee, her work has some relation with him.
It seems there was a disputation on performace measure of LFS between her and Ousterhout. See