SSH freezes

[voicesintrance]

Hi all,

I've been having a bit of a strange issue where my ssh connection to
to the device will become unresponsive for a time, spontenously and
repeatedly, for up to several minutes each time. I'm not sure what
the cause could be -- the console connection is still responsive and
programs still appear to run. I've tried both openssh and dropbear,
and the same issue seems to affect both of them, which makes me wonder
if it's a network issue. This has also happened across two different
USB wifi adapters -- currently I'm using an rt2500usb compatible wifi
adapter.

On occasions, the connection will work for hours without issue.

Any thoughts?

thanks