XEmacs 21.2.29 - CPU usage problem (also in b28)

Hi, When beta 28 was released, I posted a message to this list describing a problem that appeared in b28 as compared to b27 - just sitting there, XEmacs used up ~50% of my 2 CPUs time - most probably, it ate 100% of one of them. At least that was reported by the NT task manager. Nobody replied to my message unfortunately, so I have no idea whether the problem was unique to my system or not. Anyway, now in beta 29 the problem is still very much there. I am using a cygnus build (the cygwin is a December snapshot), and never had similar problems prior to beta 28 (because of it, I'm still using b27 - the last good one for me). I would very much appreciate if someone who knows the code involved took a look at the problem - it is very real. Thanks. (My system is a dual PII-400, running NT 4 sp6a.) -- Cheers, -Dima.