Macbook Air 4.2 SDHC reading problem

I am using lastest macbook air.
I tried to use the Sandisk SDHC card, but it won't work.
If I boot with Windows, it works fine, but Lion can't read the SDHC card.
Anyone know a reason or solution to solve it?

The OP indicates the OS Version is 10.7.1 in the signature.
I would upgrade to 10.7.2 first,, to eliminate that possibility.
I have been running Sandisk Ultra 32GB with no problems on my MBA running 10.7.2 with out any problems.

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HEY, i have some issue i am using macbook air i5...the problem is that without doing anything 1.5gb of ram out of 2gb always in use ..please help me how to make it normal....
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ADEEL UR REHMAN wrote:
...the problem is that without doing anything 1.5gb of ram out of 2gb always in use
No computer can do a thing without using memory. 1.5 GB is very little. It's normal.
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The next time you have the problem, note the exact time: hour, minute, second.
If you have more than one user account, these instructions must be carried out as an administrator.
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Reset SMC. http://support.apple.com/kb/HT3964
Choose the method for:
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Best.

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Welcome to the Apple Support Communities
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HI,
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Macbook Air 4.2 SDHC reading problem

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