You could have a secure docuemnt open from your secure truecrypt volume in active memory which then gets saved unencrypted onto disk. Lots of tools out there to sniff out swapfile data.

Notes for truecrypt, under windows it will force a dismount by default I believe when power saving features are used. What you should do is disable hibentate and disable the force dismount in truecrypt. This will allow the computer to use standby without violently disconnecting all your truecrypt stuff. Standby is fine as all the important stuff is just kept in the memory which only lasts a few minutes and should have password protection on activation by the os.

1 main difference I create have the following partition setup:
1: NTFS (windows) 20GB
2: Ext3 (Linux) 5GB
3: FAT32 (Used for dual Swap) 3GB
4: Rest of space truecrypt

Main advantage is of having a seperate swap partition is that its quicker to access than a large NTFS volume. NTFS write access on linux I still don’t feel comfatable trusting it and now theres no need.

Also for a ‘secure’ setup I recommend that you regularly use a tool like shred (linux) to secure erase the pagefile or even the fat32 partition completely.

Beware using the ext2 drivers in windows. They work well but theres one feature they don’t have ‘Defragmention’. Theres no working defrag tool for ext2/3 as it defrags as put of its normal operation (Don’t use the ancient one out there as it will corrupt stuff). I did not realise this and used an ext2 partition in windows (I found to be much quicker than ntfs and could use big files). After few months of running torrent I reached 90% fragmentation then realised why.