I have a TrueCrypt volume created under Windows 7. Some folders and file names contain Cyrillic symbols. When mounting the volume in Ubuntu 10.10, I see question marks instead of those letters. Is there a solution, or should I avoid non-ASCII symbols if I want to open the volume in Windows and Ubuntu?
I had the same problem. Here's how I resolved it.
The truecrypt volume you created was most likely formatted as FAT32. When mounting FAT in Linux default charset is iso8859-1, although long filenames in Windows are stored on disk in Unicode format.
iocharset=utf8 in Truecrypt for Mount options (globally in preferences or for specific volume in advanced options).