Seems after an upgrade to kernel-2.2.22-7.0.3 Linux started much more frequently dropping TCP connections, especially the ones masqueradeded through kernel-2.2.22-7.0.3 Linux box. There was no such problem with kernel-2.2.22-7.0.2. Were there any TCP-related changes between kernel-2.2.22-7.0.2 and kernel-2.2.22-7.0.3?
Thanks for the bug report. However, Red Hat no longer maintains this version of the product. Please upgrade to the latest version and open a new bug if the problem persists. The Fedora Legacy project (http://fedoralegacy.org/) maintains some older releases, and if you believe this bug is interesting to them, please report the problem in the bug tracker at: http://bugzilla.fedora.us/