ASSERT(m_data->size() == newBuffer->size()) is being triggered when loading beta.icloud.com. This can cause problems in release build since it means we will replace existing CachedResource data with incorrect data meant for a different resource.
We will need to roll out the performance improvements made in r170499 for bug 134362.
Created attachment 236170 [details]
Committed r172215: <http://trac.webkit.org/changeset/172215>