Hello, I have exactly the same problem! I have a wireless router with ubuntu 8.04.1 server amd64 installed in it. linux-restricted-modules-server is installed and the three atheros cards I have on the computer are working, but my logs are filled of the following messages. As I realized, if there is heavy traffic in the wireless links, I get a system freeze and the only way to make it work again, is to hard reset the system. My hardy heron server installation is a clean installation without extra software installed from any other repositories or compiled by myself. [ 123.743982] wifi1: rx FIFO overrun; resetting [ 144.483652] wifi1: rx FIFO overrun; resetting [ 148.776776] wifi0: rx FIFO overrun; resetting [ 180.004606] wifi1: rx FIFO overrun; resetting [ 183.302246] wifi0: rx FIFO overrun; resetting [ 191.719875] wifi1: rx FIFO overrun; resetting [ 192.627124] wifi1: rx FIFO overrun; resetting [ 204.190854] wifi0: rx FIFO overrun; resetting [ 207.998050] wifi1: rx FIFO overrun; resetting [ 208.007314] wifi1: rx FIFO overrun; resetting [ 210.749221] wifi1: rx FIFO overrun; resetting [ 210.816101] wifi1: rx FIFO overrun; resetting [ 212.761075] wifi1: rx FIFO overrun; resetting [ 216.734022] wifi1: rx FIFO overrun; resetting [ 218.953313] wifi1: rx FIFO overrun; resetting [ 219.021589] wifi1: rx FIFO overrun; resetting [ 221.542853] wifi1: rx FIFO overrun; resetting [ 221.563488] wifi1: rx FIFO overrun; resetting [ 221.628344] wifi1: rx FIFO overrun; resetting [ 222.639861] wifi1: rx FIFO overrun; resetting [ 232.128181] wifi1: rx FIFO overrun; resetting [ 233.902064] wifi1: rx FIFO overrun; resetting [ 233.968936] wifi1: rx FIFO overrun; resetting [ 244.295052] wifi1: rx FIFO overrun; resetting [ 246.966877] wifi1: rx FIFO overrun; resetting [ 248.097370] wifi1: rx FIFO overrun; resetting [ 248.097902] wifi0: rx FIFO overrun; resetting [ 248.148615] wifi1: rx FIFO overrun; resetting [ 249.985135] wifi1: rx FIFO overrun; resetting [ 250.051365] wifi1: rx FIFO overrun; resetting [ 251.129600] wifi1: rx FIFO overrun; resetting [ 252.219987] wifi1: rx FIFO overrun; resetting [ 252.950020] wifi1: rx FIFO overrun; resetting [ 256.934653] wifi1: rx FIFO overrun; resetting [ 257.588001] wifi1: rx FIFO overrun; resetting [ 257.654253] wifi1: rx FIFO overrun; resetting [ 260.054237] wifi1: rx FIFO overrun; resetting [ 260.498736] wifi1: rx FIFO overrun; resetting [ 260.669070] wifi1: rx FIFO overrun; resetting [ 262.000354] wifi1: rx FIFO overrun; resetting [ 266.287543] wifi1: rx FIFO overrun; resetting [ 266.287585] wifi0: rx FIFO overrun; resetting [ 266.855723] wifi1: rx FIFO overrun; resetting [ 266.882176] wifi1: rx FIFO overrun; resetting [ 268.310498] wifi1: rx FIFO overrun; resetting [ 275.181613] wifi1: rx FIFO overrun; resetting [ 277.311492] wifi0: rx FIFO overrun; resetting [ 279.614358] wifi1: rx FIFO overrun; resetting [ 280.144500] wifi1: rx FIFO overrun; resetting [ 284.115790] wifi1: rx FIFO overrun; resetting [ 287.317259] wifi1: rx FIFO overrun; resetting [ 287.378563] wifi1: rx FIFO overrun; resetting [ 291.153347] wifi1: rx FIFO overrun; resetting [ 292.127141] wifi1: rx FIFO overrun; resetting [ 304.388398] wifi1: rx FIFO overrun; resetting [ 306.941592] wifi0: rx FIFO overrun; resetting [ 313.284755] wifi1: rx FIFO overrun; resetting [ 314.989950] wifi1: rx FIFO overrun; resetting [ 315.314519] wifi1: rx FIFO overrun; resetting [ 316.469790] wifi1: rx FIFO overrun; resetting [ 317.343774] wifi1: rx FIFO overrun; resetting [ 318.567148] wifi1: rx FIFO overrun; resetting [ 318.857947] wifi1: rx FIFO overrun; resetting [ 318.920478] wifi1: rx FIFO overrun; resetting [ 319.501009] wifi1: rx FIFO overrun; resetting [ 319.505702] wifi0: rx FIFO overrun; resetting [ 319.593331] wifi1: rx FIFO overrun; resetting [ 319.767362] wifi1: rx FIFO overrun; resetting [ 319.768987] wifi2: rx FIFO overrun; resetting [ 319.816454] wifi1: rx FIFO overrun; resetting [ 320.029131] wifi1: rx FIFO overrun; resetting [ 320.090609] wifi1: rx FIFO overrun; resetting [ 320.742133] wifi2: rx FIFO overrun; resetting [ 321.763768] wifi2: rx FIFO overrun; resetting [ 321.771887] wifi1: rx FIFO overrun; resetting [ 321.815166] wifi1: rx FIFO overrun; resetting [ 321.868523] wifi1: rx FIFO overrun; resetting [ 322.075651] wifi1: rx FIFO overrun; resetting [ 322.651106] wifi1: rx FIFO overrun; resetting [ 322.870570] wifi1: rx FIFO overrun; resetting [ 323.795339] wifi0: rx FIFO overrun; resetting [ 323.911559] wifi1: rx FIFO overrun; resetting [ 323.974201] wifi1: rx FIFO overrun; resetting [ 324.166840] wifi1: rx FIFO overrun; resetting [ 324.170191] wifi2: rx FIFO overrun; resetting [ 325.569720] wifi1: rx FIFO overrun; resetting [ 325.598381] wifi1: rx FIFO overrun; resetting [ 325.626087] wifi1: rx FIFO overrun; resetting [ 327.467890] wifi1: rx FIFO overrun; resetting [ 327.529438] wifi1: rx FIFO overrun; resetting [ 328.058538] wifi2: rx FIFO overrun; resetting [ 328.293726] wifi0: rx FIFO overrun; resetting [ 328.294301] wifi1: rx FIFO overrun; resetting [ 328.411595] wifi1: rx FIFO overrun; resetting [ 328.989682] wifi1: rx FIFO overrun; resetting [ 329.010655] wifi1: rx FIFO overrun; resetting [ 329.045579] wifi1: rx FIFO overrun; resetting [ 329.392199] wifi1: rx FIFO overrun; resetting [ 329.459131] wifi1: rx FIFO overrun; resetting [ 329.777585] wifi1: rx FIFO overrun; resetting [ 329.848410] wifi1: rx FIFO overrun; resetting [ 331.862572] wifi1: rx FIFO overrun; resetting [ 332.111215] wifi1: rx FIFO overrun; resetting [ 333.753664] wifi1: rx FIFO overrun; resetting [ 333.824586] wifi1: rx FIFO overrun; resetting [ 333.954274] wifi1: rx FIFO overrun; resetting [ 334.176250] wifi1: rx FIFO overrun; resetting [ 334.589011] wifi1: rx FIFO overrun; resetting [ 334.661665] wifi1: rx FIFO overrun; resetting [ 334.726230] wifi1: rx FIFO overrun; resetting [ 334.848313] wifi1: rx FIFO overrun; resetting [ 334.884852] wifi1: rx FIFO overrun; resetting [ 337.124826] wifi1: rx FIFO overrun; resetting [ 337.800897] wifi2: rx FIFO overrun; resetting [ 337.910018] wifi1: rx FIFO overrun; resetting [ 337.934001] wifi1: rx FIFO overrun; resetting [ 337.948994] wifi1: rx FIFO overrun; resetting [ 337.995148] wifi1: rx FIFO overrun; resetting [ 338.187153] wifi1: rx FIFO overrun; resetting [ 338.338003] wifi1: rx FIFO overrun; resetting [ 338.839278] wifi1: rx FIFO overrun; resetting [ 338.855404] wifi1: rx FIFO overrun; resetting [ 338.921947] wifi1: rx FIFO overrun; resetting [ 339.117335] wifi1: rx FIFO overrun; resetting [ 339.919601] wifi1: rx FIFO overrun; resetting [ 339.962392] wifi1: rx FIFO overrun; resetting [ 340.090396] wifi1: rx FIFO overrun; resetting [ 340.111846] wifi1: rx FIFO overrun; resetting [ 340.139490] wifi1: rx FIFO overrun; resetting [ 340.516120] wifi1: rx FIFO overrun; resetting [ 340.580409] wifi1: rx FIFO overrun; resetting [ 340.716447] wifi1: rx FIFO overrun; resetting [ 340.778213] wifi1: rx FIFO overrun; resetting [ 341.521874] wifi0: rx FIFO overrun; resetting [ 341.666280] wifi1: rx FIFO overrun; resetting [ 341.736291] wifi1: rx FIFO overrun; resetting [ 342.867119] wifi2: rx FIFO overrun; resetting [ 343.397510] wifi1: rx FIFO overrun; resetting [ 343.458798] wifi1: rx FIFO overrun; resetting [ 343.626110] wifi1: rx FIFO overrun; resetting [ 343.964196] wifi1: rx FIFO overrun; resetting [ 344.028073] wifi1: rx FIFO overrun; resetting [ 344.755646] wifi1: rx FIFO overrun; resetting [ 344.820933] wifi1: rx FIFO overrun; resetting [ 345.186814] wifi1: rx FIFO overrun; resetting [ 345.359757] wifi1: rx FIFO overrun; resetting [ 345.377536] wifi1: ath_reset: unable to reset hardware: 'Hardware didn't respond as expected' (HAL status 3) . . . . . Nov 18 15:13:42 trinity kernel: [ 253.658287] wifi1: rx FIFO overrun; resetting Nov 18 15:13:43 trinity kernel: [ 255.159244] wifi1: rx FIFO overrun; resetting Nov 18 15:13:44 trinity kernel: [ 255.443661] wifi1: rx FIFO overrun; resetting Nov 18 15:13:44 trinity kernel: [ 255.705323] wifi1: rx FIFO overrun; resetting Nov 18 15:13:45 trinity kernel: [ 256.576332] wifi1: rx FIFO overrun; resetting Nov 18 15:13:45 trinity kernel: [ 256.601155] wifi1: rx FIFO overrun; resetting Nov 18 15:13:45 trinity kernel: [ 257.163222] wifi1: rx FIFO overrun; resetting Nov 18 15:13:46 trinity kernel: [ 257.228009] wifi1: rx FIFO overrun; resetting Nov 18 15:13:46 trinity kernel: [ 257.473392] wifi1: rx FIFO overrun; resetting Nov 18 15:13:47 trinity kernel: [ 258.827317] wifi1: rx FIFO overrun; resetting Nov 18 15:13:47 trinity kernel: [ 258.907721] wifi1: rx FIFO overrun; resetting Nov 18 15:13:49 trinity kernel: [ 260.248979] wifi1: rx FIFO overrun; resetting Nov 18 15:13:49 trinity kernel: [ 260.318518] wifi1: rx FIFO overrun; resetting Nov 18 15:13:49 trinity kernel: [ 261.159037] wifi1: rx FIFO overrun; resetting Nov 18 15:13:50 trinity kernel: [ 261.368960] wifi1: rx FIFO overrun; resetting Nov 18 15:13:50 trinity kernel: [ 261.940359] wifi1: rx FIFO overrun; resetting Nov 18 15:13:51 trinity kernel: [ 263.169395] wifi1: rx FIFO overrun; resetting Nov 18 15:13:52 trinity kernel: [ 264.144902] wifi1: rx FIFO overrun; resetting Nov 18 15:13:53 trinity kernel: [ 264.938662] wifi1: rx FIFO overrun; resetting Nov 18 15:13:55 trinity kernel: [ 266.447000] wifi1: rx FIFO overrun; resetting Nov 18 15:13:55 trinity kernel: [ 266.523414] wifi1: rx FIFO overrun; resetting Nov 18 15:13:55 trinity kernel: [ 266.594247] wifi1: rx FIFO overrun; resetting Nov 18 15:13:56 trinity kernel: [ 267.166184] wifi1: rx FIFO overrun; resetting Nov 18 15:13:56 trinity kernel: [ 267.169429] wifi0: rx FIFO overrun; resetting Nov 18 15:13:56 trinity kernel: [ 267.182120] wifi1: ath_reset: unable to reset hardware: '' (HAL status 0)