IMP3Net: Mediatek acknowledges there’s a WiFi disconnection problem with the Helio X10 CPU but insists it can be fixed by vendors via software [Google Translate]. This is the CPU in the BLU Pure XL.
Over at PadNews, they say Mediatek’s X10 problem hasn’t been solved and Mediatek is basically lying about the solution. In addition, the upcoming Helio X20 CPU has overheating problems leading to delays in market introduction [Google Translate].
Additional:
MediaTek Helio X20 allegedly plagued by overheating issues
Why Mediatek don’t share source code, and why they should! (practice still in effect)
Mike Cane's Atomic Supermen 