Since this the the rant and rave forum...
I just checked the memory stats on my Bold. I have 859MB of device memory Viigo (or any other app) could use to store as much RSS cruft as I have bandwidth to download in a month. Then there is the memory card. When apps get bloated (1.2 maga freakin' bytes, for an app! I thought my largest was getting fat at 60KB) and also choose to store data in the same location as PIM data you are going to run into problems like that.
My other Blackberry is a PlayBook.