Attack on server via Gallery

[marian]

We had an attack on the server today and have tracked it down to one IP addy hitting Gallery images at a crazy rate, until it ran out of memory.
We have been remiss about upgrading and I'll get that done as soon as India wakes up. So my first question is will upgrading stop a repeat? The IP addy has been banned, but might be spoofed.
There are two odd things about this. 1. Although we have changed to pid URLS, the URLS that showed up in the logs were pos - like /photos/displayimage.php?pos=-1982. 2. The pix viewed counter did not go up in accordance with the rate images were being hit.
Any advice much appreciated.

[Nibbler]

Updating won't protect you from a DOS attack - you'll need to counter that at the server or firewall level.