Everyone has this problem ... and if you don't ... yer fricken lucky ehhehehe.
Take a look all over the TG01 forums. This problem along with other SD card related problems exist everywhere you go. Now I have owned both the TG01 and the T01a. I don't recall this problem existing on the T01a from DOCOMO. Unfortunately, I couldn't sim unlock the T01a, so I sold it for an unlocked TG01.
My friend, if you could write a launcher to "wake up" the SD card, that would be VERY much appreciated by literally everyone on this forum.
Thank you.... very much in advance,
PS: Something nifty. I have installed everything that runs as a service or consistently in memory on my main memory, and I even use all wallpapers from main memory and make sure that all cashing takes place on the main memory. It hasn't frozen for a few hours now. Even coming out of sleep mode, everything is A-OK.