Mines had uptimes of around two weeks before, though I generally like to reboot occasionally. *Shrug* While I have noticed occasional bugs that randomly crop up, I see no correlation between uptime and buggy-ness, let alone lag.

I think it's just a matter of certain programs being screwy. Ideally, whenever someone posts anything like this, they would post a list of everything they have installed on their N900's, so we could start getting a comprehensive list of programs that seem to be correlated with increased instability and/or increasing slowness with uptime.

Until people start doing that, this isn't going to get far.