[PHP4BETA] PCRE problems

I'm using the PCRE to perform some fairly heavy regexp work using preg_replace with the e, i and s flags set in the search pattern, for instance: $pattern = '/(<IMG SRC=")([^"]+)"/eisU'; $html = preg_replace($pattern, "'\\1' . absoluteImage('\\2', '$this->url', '$server') . '\"'", $html); I'm finding that SOMETIMES a series of this along with similar operations generates this error: FATAL: emalloc(): Unable to allocate 1077909393 bytes [Wed Apr 12 13:04:05 2000] [notice] child pid 1361 exit signal Segmentation fault (11) At other times I encounter no problems. Sometimes turning off the 's' flag on the pattern fixes the problem, at other times eliminating one or another of the replace operations in the series fixes the problem. I'm baffled, and hoping that someone can suggest a permanent fix. Thanx, -Daniel