My guess is that it aint a Reason issue , never heard such a thing in the past (And i visit loadsa fora's bout Reason ...).
But i will give me ol grey brainz a go ...
@joji123 , perhaps a good idea to post your sys-specs as well (OS , etc etc)
And what other programs do you both run on the background ? , any trojan-killers , virusscanners or anything like that ?
(Dunno if you both tried the 4.01 update yet ... , the issue you both have aint discussed in the "fix"list ... but you never know ...)
Or any other "non-common" things you did with your putah ? (non-common : other HD setups ... (RAID for example ..)
If the things above wont help you further , then i will have to use me grey mass again ..