A new stable kernel 188.8.131.52 has been released. While this is the most stable one for now, it will soon be overridden by the next final version of the 2.6.19 kernel in just a few days (or weeks). But for now, those who had some problems with the previous -stable kernel should try to upgrade to this version which may have fixed your problems. You can see the changes in the long-format Changelog.
Update (7:47 AM) : It seems that 2.4.x has been updated also. Willy Tarreau has updated 2.4.x into 184.108.40.206 with a bunch of updates. I think Pat will also update -stable kernel series with this version also.