http://bugs.winehq.org/show_bug.cgi?id=6936
--- Comment #31 from Wine? Gimme Beer! furex.furetto+wine@gmail.com 2007-12-06 16:30:02 --- If that patch has actually been introduced in 0.48a, then it had little or no effect.
3 different users (including me) have reported CPU hogging with 0.48a, though the bug report has been originally opened when 0.47c was the most recent version.