Walmart ATMs compromised?

I just read this on another board:
I believe the Wal-Mart ATM was compromised Monday, January 10th. I have a friend visiting. We used the Bancomer ATM in Wal-Mart, and when there was no money available, she tried the HSBC ATM right beside it. Again, no money was available.

While standing in line with a few sundries, we saw three other people try to use both machines, and no one was able to receive cash.

Within hours, her card had been duplicated and she had Wal-Mart charges from two locations (Stuart and Vero Beach, Florida) to the tune of $200, $200, and $400.

If you used either ATM in Wal-Mart around that time, you may want to check your account.

I used the Walmart Bancomer on the 12th with no problems & then used the Bancomer ATM on the Libriamento on the 13th & my account seems OK.