I use uT 1.8.5 and 2.2.1 (on different computers) and have no problems, well, other than the fact that I cannot use more than ~1.5GB as cache, since if the uT process hits 2GB memory usage it crashes (because it is a 32bit process and does not use AWE, which would allow 32bit processes to access more than 4GB RAM).
Other than that, uT is very stable, does not use a lot of CPU, so it's good enough for me.
Also, if I wanted remote access, I would use something else. I'm planning to buy a Viliv N5 or a similar device (has to be x86 and have a decent keyboard, basically, a modern Psion Series 5, but also with x86), then I will be able to VPN to my network and use radmin.