Memory upgrade de-authorised computer

Hi All,
Upgraded my Mac Mini RAM yesterday to 10GB (8+2), even though the upgrade seems to have cured the sluggishness of the system (2.5 GHz Intel Core i5) one side affect is that the computer is no longer authorised to iTunes.
Worse thing is I "deauthorised all" november this year when I bought my Daughters macbook pros for christmas, and iTunes store now suggests i need to wait till 6 nov 2015 to reset.
Any suggestions please?

Nice support letter from Apple that reset my Authorisations and explain the hardware change "counting" dilemma
Hello Ian,
Greetings from iTunes Store Support.
My name is xxxx. First of all, I apologize for the delay in response from us. I know it must have been difficult for you to wait for a response from us and I deeply regret that. I understand that you are unable to de authorize your computer as you already used "deauthorised all" option. I can certainly understand wanting to deauthorize computers that no longer require access to your account and I will certainly look into this for you today.
Ian, I have deauthorized all computers associated with your iTunes Store account. You can now reauthorize the computers that you intend to use. For specific instructions on how to authorize and deauthorize a computer to play your iTunes Store purchases, please read the following technical support article:  http://support.apple.com/kb/HT1420  If you repair or upgrade certain components on your computer, one computer may use up multiple authorizations.
If possible be sure to deauthorize your computer before you repair or upgrade it to avoid this. If you find that you have computers you would like to deauthorize, you can deauthorize each computer individually by following the steps outlined in the following article:  http://support.apple.com/kb/HT1206  Alternatively, if you have two or more computers authorized, you can reset your authorization count by clicking Deauthorize All on the Edit Account Information page. Keep in mind that you can only use this feature once a year. The button will not appear if you have less than two computers authorized. I hope I was able to help you today. Here in Apple, we make sure that our customers feel that they are important to us, so I hope you take this as my sincere gesture to help you out.

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    Message was edited by: seventy one

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    Solved!
    Go to Solution.

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    Copyright (C) 2004 Charles Cazabon
    Copyright (C) 2004, 2005 Tony Scaminaci (Macintosh port)
    Licensed under the GNU General Public License version 2 only
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    POSIX version 200112
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    Available memory: 18MB (19693568 bytes)
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