This excerpt taken from the PNC 8-K filed Mar 10, 2008.
ISP Transactions Temporarily Suspended
In order to ensure that all records are transitioned accurately, certain transactions are temporarily suspended during a period called a blackout period. This means you may not have access to your ISP account, change investment directions, make transfers, obtain a loan from the ISP, or obtain a withdrawal/distribution from the ISP during some or all of this period. Thus, you will be unable to exercise some or all of these rights otherwise available under the ISP. Whether or not you are planning to retire in the near future, we encourage you to carefully consider how this blackout period may affect your retirement planning, as well as your overall financial plan. Be sure to read this complete Notice for more detailed information about the blackout period and how it will affect your account.