I am having trouble with Intel 536ep modem with Linux 2.4.22... The modem is working fine with the Linux 2.4.20 and it seems to almost work with 2.4.22... I.e. I can dial, I can use internet, but it usually drops the connection in less than 1 minute after connecting...
I used gcc-3.3 and gcc-3.2 to build both, kernel and 536ep driver... :( That is weird.