Client unable to read data file

Hi peeps.......having a problem getting in game, and staying in. It started right after this weeks update with the new collectibles. And yesssss, Ive tried ALL that stuff, countless times. Ive dumped the cache a cookies 20 times,[plus I have all my browsers set to not keep history when logging off] tried 3 different browsers,[ fox,ie,chrome] Ive scanned my computer for virus and malware with both spotbot and panda . I even did THEM several times. If I keep trying I can eventually get on............so far anyway. But it's getting a bit tiresome and time consuming. If anyone has any other suggestions or knows anything can they post it here ?
I DID read around the forums prior to posting , didn't see alot though.
Thanks
Lala

ive been using a different browser: maxthon. ive found theres fewer instances of lag, chat freezes, and boots from the server with it, over the 3 u mentioned. (even tho its not a 'supported' broswer according to the game.) i tend to leave the game on in the background when im doing other stuff, and maxthon seems to handle that better on this game.

http://www.maxthon.com/