Now a days, bigger memory-cards are released for your mobile; most file-explorers can handle the big sizes of the cards, but X-plore has some trouble with it (viewing Total size on the 4Gb MicroSD-SDHC card was correct!):
I've a 6Gb MicroSD-SDHC card installed in my N95; here some screenshots of X-Plore (same problem occured in the filebrowser of ProfiMail v2.82):
Below images of FExplorer, Y-Browser, Y-Tasks, Memory Card:
Have sent an e-mail to LCG about this . . .