Here is how mine acts lately, on top of constant "no signal" for 1 minute timeouts. Not happy but it was cheap.
This is something I posted a few pages back.
increasing the iframe rate just seems to alter how long it take to clean up the image before it start to "trail" again.
i did find that dropping the resolution to 2mp helped with this a lot, however, I still have a LOT of "no signal" alarms.
on power up, if first seems ok, then very shortly after it is as though the camera is in slow mo (the clock overlay also runs slow) then, about every 5 seconds it will jump to catch up to were it should be, then repeats as before!
Eventually the on display clock gives up and disappears, then at some point after that I get the "no signal".
it eventually comes back on by itself...
upto now ive not been able to find a stable condition for it to run at 5mp at 25fps without it either dropping frames, creating trails or randomly packing in!
ive a number of other (mostly cheap Chinese 2mp) cameras on the network feeding into BI and they give me no trouble at all.
rice