Can you give me any specifics? Are other services normal but just Gmail slow? Can you maybe run a traceroute to Google or Gmail so I can take a quick look?
Tracing route to gmail.com [216.58.223.5]
over a maximum of 30 hops:
1 <1 ms <1 ms <1 ms sx762.dummy.porta.siemens.net [10.0.0.2]
2 * * * Request timed out.
3 21 ms 21 ms * 41.181.221.213
4 * 19 ms 18 ms 41.181.221.214
5 19 ms 18 ms 18 ms rb-dca-2.za--qux-b.za.mtnbusiness.net [41.181.16
5.118]
6 232 ms 232 ms 256 ms rb-cr-2.za--rb-dca-2.za-b.mtnns.net [196.44.0.15
5]
7 233 ms 232 ms * jh-cr-1.za--rb-cr-2.za.mtnns.net [196.44.0.42]
8 219 ms 218 ms 218 ms ls-cr-2.uk--rb-cr-1.za.mtnns.net [196.44.31.114]
9 * 225 ms 226 ms am-cr-1.nl--ls-cr-2.uk-a.mtnns.net [196.44.31.18
3]
10 223 ms 223 ms * am-tpr-1.nl--am-cr-1.nl-a.mtn.net [209.212.111.1
41]
11 230 ms 232 ms 233 ms core2.ams.net.google.com [80.249.209.100]
12 * 224 ms 224 ms 209.85.240.63
13 234 ms 234 ms 233 ms 209.85.253.249
14 * 246 ms * 216.239.48.77
15 245 ms 244 ms 244 ms 209.85.244.241
16 404 ms * 404 ms 66.249.95.9
17 384 ms 384 ms 401 ms 72.14.237.239
18 404 ms 404 ms * jnb01s07-in-f5.1e100.net [216.58.223.5]
19 404 ms 404 ms 425 ms jnb01s07-in-f5.1e100.net [216.58.223.5]
Trace complete.
Just logged into Gmail. Takes me about 3-7min to load an e-mail.