Ok so I have virtually tried every thing, gone thru many threads but there seems to be no solution.

My application catalogs seemed to ok, they all worked fine when all of a sudden they stopped working couldn't refresh them and all of them failed, so it cant be one catalog.

I have since then re-entered the catalogs, re-flashed my n900 no luck.

I dint have a wifi to test it with,so the only thing is wither my cell fone or my network, network seems to work fine as far as browsing is concerned...

what could possibly cause this help I am desperate

sorry for posting in the wrong thread.

but i managed tp get it worked using a wifi connection, problem solved.

I had a similar problem where my catalogs were not refreshing. I disabled all of them and then re-enabled them. That seemed to do it for me.

Open a terminal. sudo root. apt-get update

Fixed the issue for me