Hi Epitaph,

Top kudos Qwerty12, OptX and Epitaph for work done and helpful comments. Torrents was one of the few things I had to do on a laptop until now

MicroSD is formatted as FAT32.
It is an 8gb Transcend micro sdhc class 6 bought through Amazon.co.uk.

Formatted it through N900 builtin File Manager.
Guess I have a 4GB file size limit.

I've seen ext2/ext3 file systems mentioned, I guess these would have a higher file size limit but how would performance be compared to FAT32? I would like to be able to run Nitroid and Meego off the SD card also. Any pointers to best way to configure card would be very helpful.

I have been downloading 700MB - 1.3GB legal torrents

I have only downloaded 1 at a time at the moment.
Will test multi downloads over the weekend.

General navigation and web browsing is slightly slowed when downloads are at high download speeds, but no more than your PC is when running uTorrent. Am also able to open Transmission preferences now while downloads are running, couldn't do this without SD card.

I have 20MB Virgin Broadband.
Saw DL speeds of 800 Kb/s or KB/s (whatever the default shown is in Transmission).
Need to tweak Transmission settings now to get up to the 1.5Mb/s or 1.5MB/s DL speeds I can get on laptop with uTorrent.

I will also try QTRapids again now I have the card to see if that also no longer locks everything up.

Only real issue I have with Transmission now is adding files.
Can't get Transmission set as the default handler for torrent files.
I set it up with DBus Switchboard, but when I click a torrent file it says "Launching Transmission" then just stops and doesn't open anything.
And adding files through Transmission is not very user friendly.

Very happy otherwise

TMO rocks, one of the most helpful websites I have ever used!!
Keep up the good work all.