Update: According to HTC, this problem is currently only affecting the Tegra 3 (international) version of the One X - not the Rogers/AT&T One X or international One XL. HTC advises those affected to contact customer support, though the channel through which you purchased your device is a good bet as well, especially if it was from a carrier or brick and mortar store where they can exchange the unit immediately.
If you're a One X owner (or an avid XDA reader), you're probably aware that some poor souls have been basically unable to reliably use Wi-Fi on their devices because of a manufacturing defect. A few One X units have been affected by a poor connection on the Wi-Fi component of the device, identified by increased signal strength upon pinching the phone just to the left of the rear camera.
HTC has finally acknowledged the issue officially, in a statement below:
After investigating isolated reports of WiFi connectivity issues in the HTC One X, we have identified a fix that strengthens the area of the phone around the WiFi antennae connection points. While many customers have not experienced any problems with signal strength, we have taken immediate steps to implement a solution in our production process to prevent this issue from happening in the future. HTC is committed to making sure every customer has a great experience and we apologize for any inconvenience this issue may have caused while we conducted a thorough investigation.
The problem? HTC is vague or mute about a few very relevant questions. First, what can customers experiencing the issue do? An expedited replacement process would seem to be in order for carrier partners. Second, is this affecting all HTC One X units, or just the international Tegra 3 flavor? While it's nice that HTC has solved the issue on the assembly line, it's customers who are having the problem that are the more obvious concern here. Acknowledging the issue was basically a given after the very clear physical demonstrability of it, so it seems HTC is doing what it normally does here: saying no more than it has to. We'll update you on HTC's plans for affected customers, should they materialize.