I want to check to make sure that anybody having this issue has seen the latest update (this is for C/C++) that in the description says, "the camera code now is much more efficient with less copies and image buffer allocations in the library.The PC Video server (images back to the dashboard) are much faster now – it should in most cases run at the full camera rate. For image sizes of 320x240 the total lag should be around 0.5 seconds. Smaller images are lower."
If you are using windriver this might help out. I haven't seen an update like this for Labview or Java yet, although I haven't looked as hard.
Get the Updates from here:
http://first.wpi.edu/FRC/frccupdates.html