Rflush error after 4.0.0 upgrade

Hello,

I just went through the rt4 upgrade this morning, from 3.8.8, and things
went relatively smooth. However, I’m occasionally seeing the rflush error
below popping up in my apache2.error log. I haven’t gotten any calls on it,
so I’m not sure if this is actually kicking ppl off or what the story is,
but as a type of pre-emptive strike, I’d like to figure out what this is or
what may be causing it. Does anybody have any insight?

[Tue May 17 08:07:24 2011] [error] [client #############]
Apache2::RequestIO::rflush: (103) Software caused connection abort at
/usr/local/share/perl/5.10.0/Plack/Handler/Apache2.pm line 148, referer:
http://rt.imctv.com/
[Tue May 17 08:07:51 2011] [error] [client #############]
Apache2::RequestIO::rflush: (103) Software caused connection abort at
/usr/local/share/perl/5.10.0/Plack/Handler/Apache2.pm line 148, referer:
http://rt.imctv.com/
[Tue May 17 08:10:04 2011] [error] [client #############]
Apache2::RequestIO::rflush: (103) Software caused connection abort at
/usr/local/share/perl/5.10.0/Plack/Handler/Apache2.pm line 148, referer:
http://rt.imctv.com/
[Tue May 17 08:10:42 2011] [error] [client #############]
Apache2::RequestIO::rflush: (103) Software caused connection abort at
/usr/local/share/perl/5.10.0/Plack/Handler/Apache2.pm line 148, referer:
http://rt.imctv.com/
[Tue May 17 08:11:28 2011] [error] [client #############]
Apache2::RequestIO::rflush: (103) Software caused connection abort at
/usr/local/share/perl/5.10.0/Plack/Handler/Apache2.pm line 148, referer:
http://rt.imctv.com/
[Tue May 17 08:11:28 2011] [error] [client #############]
Apache2::RequestIO::rflush: (103) Software caused connection abort at
/usr/local/share/perl/5.10.0/Plack/Handler/Apache2.pm line 148, referer:
http://rt.imctv.com/
[Tue May 17 08:11:28 2011] [error] [client #############]
Apache2::RequestIO::rflush: (103) Software caused connection abort at
/usr/local/share/perl/5.10.0/Plack/Handler/Apache2.pm line 148, referer:
http://rt.imctv.com/
[Tue May 17 08:11:28 2011] [error] [client #############]
Apache2::RequestIO::rflush: (103) Software caused connection abort at
/usr/local/share/perl/5.10.0/Plack/Handler/Apache2.pm line 148, referer:
http://rt.imctv.com/
[Tue May 17 08:11:29 2011] [error] [client #############]
Apache2::RequestIO::rflush: (103) Software caused connection abort at
/usr/local/share/perl/5.10.0/Plack/Handler/Apache2.pm line 148, referer:
http://rt.imctv.com/
[Tue May 17 08:11:29 2011] [error] [client #############]
Apache2::RequestIO::rflush: (103) Software caused connection abort at
/usr/local/share/perl/5.10.0/Plack/Handler/Apache2.pm line 148, referer:
http://rt.imctv.com/