why does it always crash?

well i design my game and stuff and wen i load up the client it crashes and says hserrpid so on.. i thought it was just my game but then i played runescape and it did the same thing after a bit of playing. and i tried re installing and updating and it still crashes wats up with this?

an example is:

hs_err_pid1108

Message was edited by:

15serch15

[379 byte] By [15serch15a] at [2007-11-27 7:06:27]