Comment age shouldnt be a barrier (Score 1) 708
only go down the management route if its something you are good at, expect a pay cut at first teer management if you want to stay technical then update your cv, make sure your techinal skills are upto date and get some interviews (think of the first few interviews as practice, dont be put off by rejection)
most of all, be proactive, it does not hurt to look around, just because you have an interview doesnt mean you have to take the job, and if you know you can get another job it makes you negotiations at your current employerthat much stronger.
Also the advice about getting into some of the trickier problems was a good one, your less likly to be laid off if your noticedand known to be helpful
being 40 should not be an issue if your good at your job, keep your skills upto date and remain flexible