Anyone else getting memory erros on Steam?

[#1]

TRYING to play TF2 - i get a error message after joining a server and it says i am running low on memory so it's shut down
According to the system im using 827MB of RAM out of a total of 4GB

[#2]

Is this the error?
http://forums.steampowered.com/forums/showthread.php?t=617011
Jeff

[#3]

Cheers Jeff, but no it's not.
ill screenshot it the next time it happens