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I logged into Experian today and it says that my available credit decreased by $17k. I checked all of my accounts and I haven't had any CLD's. What the heck?
Login to each website you have an account with and look for a CLD. Check CK to if you have an account. Try "See what Changed". Go to annualcredit.com and look at your real reports.
Check all of the accounts listed on your Experian report, and also make sure none have dropped from the report.
On a side note, MyFico is annoyingly vague when things like this happen and an alert will pop up that says "Bankcard has been removed" or "A delinquincy / past due account has been removed" or "Your credit limit changed" without actually stating what it is.