802.1x caused Switch to hang - Memory too low

Hi all,
Anyone experienced this before while turning on flex authentication (802.1x, MAB, Web Auth), causing the switch too hang. When the switch hang, I can't even telnet to switch or even console into the switch. The message I am getting from the console is "Memory too low, please try again later".
It happens weeks after 802.1x was enable on the switch, can anyone share their experience on this? Thanks.

Any luck with this??
We have quite a few 4500's doing the same thing.

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My apologies if this has already been posted. I didn't see this question anywhere else in the forums.
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http://support.apple.com/kb/TS1421
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802.1x caused Switch to hang - Memory too low

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