Wow, two blog entries in the same day! When I wrote the large 'Quota' blog entry below, I did not realize there would be a micro-code update going out the same evening.
So here it is. Code 2011.1.4.2 has just been released. You can get the readme file for it here: https://wikis.oracle.com/display/FishWorks/ak-2011.04.24.4.2+Release+Notes
Download it, of course, through the MOS website.
It looks like it fixes a pretty nasty bug. Get it if you think it applies to you. Unless you have a great reason NOT to upgrade, I would strongly advise you to upgrade to 2011.1.4.2. Why? Because the readme file says they STRONGLY RECOMMEND YOU ALL UPGRADE TO THIS CODE IMMEDIATELY using LOTS OF CAPITAL LETTERS.
That's good enough for me. Be sure to run the health check like the readme tells you to.
**Updated after I posted the above... What worries me is that 2011.1.5.0 was supposed to be out pretty soon, as in weeks. So if they put this 1.4.2 version out now, instead of just adding these three fixes to the 1.5.0 code, they must be pretty important.