I'm not even going to pretend having knowledge of the regex engine, but I'm happy to do the gruntwork :-)

Confirmed on Debian Etch amd64 with a built-from-source perl 5.10.0: 

rhesa@apollo64:~/devel/test/pm$ perl -s 669148 -S=1e6 -N=13104 | wc -l
Trying 13104 probes with perl 5.010000 at 669148 line 18.
1203554358 at 669148 line 20.
1203554362 at 669148 line 27.
11376

rhesa@apollo64:~/devel/test/pm$ perl -s 669148 -S=1e6 -N=13105 | wc -l
Trying 13105 probes with perl 5.010000 at 669148 line 18.
1203554370 at 669148 line 20.
^C after about 500 seconds

[download]
And on a 32 bits build under CentOS 4.x: 
[rhesa@mp-cent-07 tmp]$ /opt/perl5.10/bin/perl -s 669148 -S=1e6 -N=131
+04 | wc -l
Trying 13104 probes with perl 5.010000 at 669148 line 18.
1203554602 at 669148 line 20.
1203554606 at 669148 line 27.
11376

[rhesa@mp-cent-07 tmp]$ /opt/perl5.10/bin/perl -s 669148 -S=1e6 -N=131
+05 | wc -l
Trying 13105 probes with perl 5.010000 at 669148 line 18.
1203554645 at 669148 line 20.
^C after about 400 seconds

[download]

In reply to Re: 5.10.0 regex slowdown by rhesa
in thread 5.10.0 regex slowdown by BrowserUk

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