I’ll echo what the other posters have said-in all likelyhood, it’s not an isolated problem.
The issue has been identified in several cases as memory-related; in most cases, what is happening is that if you’re loading content from a java-enabled page, or if you’re loading a YouTube video, the memory buffer fills, and if the system is running apps (iPod, for example) in the background, will cause the Safari app to crash, or will cause the music to stop and Safari to crash.
It may be noteworthy that in the case of both the iPhone and the Mac, the Mac OS X utilizes both RAM and hard disk space for virtual memory; your situation with filling up the iPod with music may in fact be contributing to the problem, but it’s hard to say if that’s the only source of the problem.
On my mac, anytime the system hard drive fills up to 85–90 percent capacity, the OS starts to go all wonky-it’s related to the way UNIX system calls utilize the memory. I imagine the same would be true of the iPhone’s storage space as well (7.2 GB, so 85–90% full would be anywhere around the 6GB plus range).
There are things you can do to mitigate the other issue of memory management.
-In Safari; go to: Settings/Safari and clear your history, cache, and cookies; thi s is a ‘soft reset’ of sorts for the app;
-System-wise, you can perform a hard reset by holding down the mute and home buttons simultaneously for 10 seconds, until you see the apple logo appear; this will reset the OS, and restore the system back to base.
-All else fails, and you’re having consistent crashes, then backup/sync everything in iTunes, then perform a system restore (erases and reinstalls the system software), then re-sync your data/music etc.