Missed appellate deadlines?

Here is the QP in Holland v. Florida

Whether “gross negligence” by collateral counsel, which directly results in the late filing of a petition for a writ of habeas corpus, can qualify as an exceptional circumstance warranting equitable tolling, or whether, in conflict with other circuits, the Eleventh Circuit was proper in determining that factors beyond “gross negligence” must be established before an extraordinary circumstance can be found that would warrant equitable tolling?