Back in the dead of winter Mavic issued a recall on their R-Sys wheelsets, after discovering an issue that could cause failure of the front wheel. Especially prone to side-force damage, the carbon spokes of the R-Sys wheels had a risk of failure. (In fact one of our local shops had his wheels fail–a slow sort of crumbling of a spoke–months before the recall.)
Shops that sent the R-Sys wheels in right away are starting to see them return. My own front wheel just came back from Mavic, and it looks dandy. Mavic gave all users a set of Askium wheels to use during the repair, which we were able to keep, so look for a flood those “loaner” wheels on eBay soon.