We don't have an official statement from nokia. My SDHC cards were killed while
transferring large files over wlan. Perhaps the N800 itself is defect.
Sending it for repair is a huge risk. Some people with touchscreen issues (for example)
had to wait several weeks until they got a response from nokia
... and we don't know if its really a hardware problem. Perhaps a soon (?)
firmware update will correct this problem.