A stroll throught the FAQ's turned up this: (I wrote it ;-))

Linksys WRT54G - BlackBerryFAQ

Mine works great, when at my WiFi hotspots, I am connected 95% of the time. My transitions to and from T-mo's towers is at about 95% reliability as well. My roomie works from home, and she has used it all week so our minutes wouldn't be affected 'cause we are house-sitting and the owner doesn't have a land line. The only time I have issues, is when using bluetooth.

I just can't keep a UMA connection. I'll get it after a battery pull or manually turning off wi-fi and turning it back on again. But after a few minutes I lose it and never get it back. However the wi-fi icon indicates I have wi-fi data. I check the error messages and they are all ISP related. While the UMA isn't critical to my phone experience at this point in time, I'd really like this function to work as advertised.

you all need to click on the help button on your berry and go to black berry help web site, first topic hot spot @ home uma not working on my BB curve 8320. go there and down load the root cert and all your problems will be solved. i had all the same issues. now all are corrected NO UMA PROBLEMS HERE !!!!!!!!!! works perfect

why are my messages being deleted

edit