(Periodic) Segmentation faults when using regex-compat-0.92

I am getting periodic (although frequent) segmentation faults when loading the following code into ghci (version 6.13.20100309) and then asking for the value of re_results1:

module Examples.RegExpTest where

import qualified Text.Regex as RE

re = RE.mkRegexWithOpts "^a+" True True re_results1 = RE.matchRegexAll re "aaaab"

Is this a known problem? Are there known work arounds? Kathleen