"Fake Folding"?

[new bat pr2]

So, my FAH client folds slowly (usually about 2-3 days to finish a work unit), but sometimes it speeds up to relatively insane speeds - it gets to 99.99% in a few minutes. It's stuck at 99.99% for a while, after that it goes back to about the same percentage as it was before the "speed-up" and will start folding slowly as normal.

Does anybody else experience this?

thank goodness its not just me this happens to me all the time on both of my laptops