'91 200Q: hard pedal -- bad bomb?

[Arun & Vimala Rao <avrao@pacbell.net>]

This problem is probably common to all the type 44's -- for the past
week, I notice that the brake pedal is firmer than usual, esp. when I
take the car out first thing in the morning. Braking effort is higher as
well. The brake idiot light on the dash has been slow to go out for
quite a while, and that continues to be the case.  Brake fluid and hyd.
reservoir fluid are fine -- should I suspect the infamous bomb?

Thanks!

-Arun