I'm a first-time LilyPond user. I just downloaded version 2.11.63 for Vista and noticed the same behavior described in the following defect, which was fixed in 2.11.43:
545 Defect Verified Medium ---- v.villenave LilyPond is excessively slow on Windows Vista Performance fixed_2_11_43 _______________________________________________ lilypond-user mailing list lilypond-user@gnu.org http://lists.gnu.org/mailman/listinfo/lilypond-user