I have problems since about 3:30 or so .. first my 3G connection went "dead" and no GPRS either .. eventualy I got on with GPRS. Then again, my wife is using my virgin sim card on het laptop / motorola a few kms away .. and she also got disconnected, but I think that phone MAY be set to Vodacom Network only.
I eventualy got connected through Vodacom GPRS again ..
I took out a MTN contract with a data card a few months ago. I get about 30MB a month "free". Mycall 75. I use the MTN sim in the beginning of each month till all my "free" MB is used up. Then I use the Virgin Mobile sim.
I use the Vodacom sim only if I need to download something quickly. I have HSDPA coverage at home so it helps a lot if I need a fast connection.