This is a common problem. The same used to happen to me even without packing, but then I got used to it and it didn't happen anymore. Now I can pack a lot without trouble.
For dry statics maybe it's worth trying without packing, or with only a little.
Some more threads on this...
http://forums.deeperblue.net/forum15/thread57693.html
http://forums.deeperblue.net/forum15/thread58493.html
Lucia
