Thank you for the heads up on this.
It may be prudent to avoid version 10.52 as there is a dangerous security issue with it.
Opera Software is aware of the issue and are currently preparing a patched version, 10.53, which is at RC1 stage.
I remember what happened last time Opera rushed out a patched up version (10.50 ) which was a disaster........so I will stick with my vesion 10.10 until I see how things go.