I've been running 14.04 for a while now and haven't had any major issues. A couple days ago though, my wireless connection started dying on me. I hadn't changed anything, so I'm not sure where this came from.
The symptoms are always the same, it connects to the wifi just fine after boot, then dies 5-10 minutes into regular usage. Running a constant ping goes from regular responses to "sendmsg: No buffer space available" and then to "sendmsg: Network is unreachable".
I found a few different threads about this and tried a few things, but no change.
I'm using a Realtek USB adapter, but the driver version is much newer than one someone listed as problematic. I also tried setting my wireless router to g-mode only, same issue. I only recently made the switch from the "w" word to Ubuntu, so I'm not sure where else to look. Any ideas?